Updated on 2025/03/19

写真a

 
Inoue Hiroshi
 
Organization
Graduate School of Engineering Division of Science and Engineering for Materials, Chemistry and Biology Professor
School of Engineering Department of Applied Chemistry
Title
Professor
Affiliation
Institute of Engineering
Contact information
メールアドレス
Homepage
http://www2.chem.osakafu-u.ac.jp/ohka/ohka4/engl.html
Affiliation campus
Nakamozu Campus

Position

  • Graduate School of Engineering Division of Science and Engineering for Materials, Chemistry and Biology 

    Professor  2022.04 - Now

  • School of Engineering Department of Applied Chemistry 

    Professor  2022.04 - Now

Degree

  • Ph. D （ Others ） (   Osaka University )

Research Areas

  • Nanotechnology/Materials / Structural materials and functional materials  / 構造・機能材料

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Catalyst and resource chemical process

  • Nanotechnology/Materials / Structural materials and functional materials

Research Interests

  • 固体高分子形燃料電池

  • 直接型アルコール燃料電池

  • アルカリ二次電池

  • 全固体電池

  • ヒドロゲル電解質

  • 水系電気化学キャパシタ

  • 電解水素生成

  • 金属ナノ粒子触媒

Research subject summary

  • 水電解用高活性カソード触媒の開発

  • 有機ハイドライドの電気化学的再生反応触媒の開発

  • 直接型アルコール燃料電池用高性能アノード触媒の開発

  • 水系電気化学キャパシタの開発

  • 固体高分子形燃料電池用カソード触媒の開発

  • アルカリ二次電池の高性能化

  • 燃料電池用電極触媒の開発

Research Career

  • Development of highly active cathode catalysts for water electrolysis

    Individual

    2017.04 - Now 

  • 有機ハイドライドの電気化学的再生反応触媒の開発

    有機ハイドライド、水素キャリア、電極触媒、水素化反応、電解  Joint Research in Japan

    2014.07 - Now 

  • Development of highly active anode catalysts for use in direct alcohol fuel cells

    Individual

    2014 - Now 

  • Performance improvement of zinc anode rechageable batteriesr

    Zinc anode, Alkaline rechargeable battery, High energy density, High power density, Dendrite growth suppression   Individual

    2005.04 - Now 

  • Preparation of electrocatalysts for fuel cell applications

    Electrocatalyst, PEFC, Oxygen reduction, Etanol oxidation, Nanoparticle 

  • 固体高分子形燃料電池用低白金量電極触媒に関する研究

    電極触媒、低白金量、PEFC、酸素還元 

Professional Memberships

  • International Society of Electrochemistry

    2004.11 - Now   Overseas

  • The Electrochemical Society

    2003.06 - Now   Overseas

  • American Chemical Society

    2002.02 - Now   Overseas

  • 日本化学会

    1989.04 - Now   Domestic

  • 電気化学会

    1989.04 - Now   Domestic

Committee Memberships (off-campus)

  • 2024年度火曜日講座講師　「13.人生100年時代のサイエンス科」   認定NPO法人　大阪府高齢者大学校  

    2024.12 

  • 大阪高等めっき技術訓練校講師   大阪府鍍金工業組合  

    2024.04 - Now 

  • 学校運営協議会委員   大阪府立三国丘高等学校  

    2024.04 - 2026.03 

  • 監事   電気化学会電解科学技術委員会  

    2024.01 - 2025.12 

  • 顧問   電気化学会関西支部  

    2023.01 - Now 

  • 第45回エネルギー管理研修講師   一般社団法人省エネルギーセンター  

    2022.12 

  • 運営幹事   電気化学会キャパシタ技術委員会  

    2022.01 - Now 

  • 幹事   電気化学会関西支部  

    2022.01 - 2022.12 

  • 第89回大会実行委員会委員長   電気化学会  

    2021.11 - 2022.03 

  • 学校運営協議会委員   大阪府立三国丘高校  

    2020.04 - Now 

  • 大阪高等めっき技術訓練校講師   大阪府鍍金工業組合  

    2020.04 - Now 

  • 甲種危険物取扱者準備講習会講師   公益財団法人　大阪府危険物安全協会  

    2020.04 - 2023.03 

  • エネルギー管理研修講師   一般財団法人　省エネルギーセンター  

    2020.04 - 2023.03 

  • 常任委員   電気化学会電解科学技術委員会  

    2020.01 - 2023.12 

  • 支部長   電気化学会関西支部  

    2020.01 - 2021.12 

  • 支部長   電気化学会関西支部  

    2020.01 - 2021.12 

  • エネルギー管理研修講師   一般財団法人　省エネルギーセンター  

    2019.04 - 2020.03 

  • 学校運営協議会 委員   大阪府立三国丘高等学校  

    2019.04 - 2020.03 

  • 大阪高等めっき技術訓練校講師   大阪府鍍金工業組合  

    2019.04 - 2020.03 

  • 甲種危険物取扱者準備講習会講師   公益財団法人　大阪府危険物安全協会  

    2019.04 - 2020.03 

  • 甲種危険物取扱者準備講習会講師   公益財団法人　大阪府危険物安全協会  

    2018.04 - 2019.03 

  • 大阪高等めっき技術訓練校講師   大阪府鍍金工業組合  

    2018.04 - 2019.03 

  • 大阪府立学校　学校協議会委員   大阪府教育委員会  

    2018.04 - 2019.03 

  • エネルギー管理研修講師   一般財団法人　省エネルギーセンター  

    2018.04 - 2019.03 

  • 委員   大阪EVアクション協議会　企画部会  

    2009.04 - 2010.03 

▼display all

Awards

  • 工業電解業績賞

    井上　博史

    2024.12   電気化学会電解科学技術委員会  

  • 電気化学会進歩賞佐野賞

    1999.04   電気化学会  

  • 電池技術委員会賞

    1998.11   電気化学会電池技術委員会  

  • 工業電解奨励賞

    1997.11   電気化学会電解科学技術委員会  

  • 日本MRS奨励賞

    1995.12   日本MRS(Materials Research Society)  

Job Career (off-campus)

  • 米国ブルックヘブン国立研究所   客員研究員（大阪府在外研究員）

    2001.07 - 2001.12

  • 大阪大学工学部   助手

    1989.04 - 1994.03

Papers

  • Preparation and Characterization of Starch-Based Hydrogel Electrolyte Membrane for Quasi-Solid-State Rechargeable Alkaline Zinc Battery Reviewed

    ZHEN Cheng, DEDETEMO Patrick Kimilita, CHIKU Masanobu, HIGUCHI Eiji, INOUE Hiroshi

    Electrochemistry   93 ( 2 )   027010 - 027010   2025.02（ ISSN:13443542 ） （ eISSN:21862451 ）

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：Domestic journal  

    <p>The development of hydrogel electrolytes is a crucial and urgent task to achieve reliable rechargeable alkaline zinc batteries. We have successfully prepared a starch-based hydrogel electrolyte membrane (SHEM) that holds a (4 mol dm<sup>−3</sup> (= M) KOH + 0.3 M ZnO) aqueous solution. The prepared SHEM was so flexible that it could be stretched and bent freely, and showed high ionic conductivity comparable to that of the alkaline aqueous solution. A pouch-type Zn/Zn cell with SHEM did not short-circuit for more than 24 h, and uniform Zn deposition without dendritic growth was confirmed in scanning electron microscope images. In the charge-discharge cycle test of a pouch-type Zn/MnO<sub>2</sub> cell with SHEM, it was demonstrated that SHEM can fully function as an electrolyte for quasi-solid-state rechargeable alkaline zinc batteries.</p>

    DOI： 10.5796/electrochemistry.24-00125

  • Effect of Starch Additive on Zinc Deposition and Dissolution Behavior in Concentrated Alkaline Aqueous Solution

    ZHEN Cheng, CHIKU Masanobu, HIGUCHI Eiji, ITOH Takashi, INOUE Hiroshi

    Electrochemistry   93 ( 2 )   027005 - 027005   2025.02（ ISSN:13443542 ） （ eISSN:21862451 ）

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    Authorship：Last author,　Corresponding author   International / domestic magazine：Domestic journal  

    <p>Rechargeable Zinc battery (RZB) is one of most promising candidates for large-scale energy storage facilities because of their advantages such as high energy, availability of safe aqueous electrolytes, and abundant zinc resources. Additives in aqueous electrolyte solutions are known to improve the charge-discharge cycle performance of RZBs, but further investigation of additives applicable to concentrated alkaline solutions is needed. In this study, starch, which is an environmentally friendly, safe and inexpensive polymer, was used as an additive. Raman spectra showed that starch was highly stable in alkaline solutions. The viscosity of the (4 mol dm<sup>−3</sup> (= M) KOH + 0.3 M ZnO) electrolyte solution increased by 9.1-fold as 0.1 g mL<sup>−1</sup> starch was added. Cyclic voltammograms showed that the addition of starch significantly improved the reversibility of the Zn deposition/dissolution wave. A Zn/Zn symmetric cell with the (4 M KOH + 0.3 M ZnO) solution including 0.1 g mL<sup>−1</sup> starch exhibited sustained charge and discharge capabilities without short circuit for over 90 h due to the inhibition of dendrite growth. In-situ Raman spectra exhibited that the starch additive was adsorbed on the Ag electrode to inhibit the adsorption of zincate, and reduced the activity of free water during the Zn deposition.</p>

    DOI： 10.5796/electrochemistry.24-00118

  • Conversion-Type Charge/Discharge Reaction Observed with Fe2O3-Modified Reduced Graphene Oxide Positive Electrode for Aluminum Rechargeable Batteries Reviewed

    Masanobu Chiku, Tomoki Fujisawa, Hiroshi Nagao, Eiji Higuchi, Hiroshi Inoue

    Future Batteries   5   100030   2025.02

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    DOI： https://doi.org/10.1016/j.fub.2025.100030

  • Electrolyte for Aluminum Rechargeable Batteries Using Dimethyl Sulfone and Aluminum Chloride Reviewed

    CHIKU Masanobu, MIYAKE Takumi, KAMEI Hikaru, HIGUCHI Eiji, INOUE Hiroshi

    Electrochemistry   93 ( 1 )   017006 - 017006   2025.01（ ISSN:13443542 ） （ eISSN:21862451 ）

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：Domestic journal  

    <p>The electrochemical deposition and dissolution of Al with an electrolyte solution containing dimethyl sulfone and aluminum chloride was investigated at 30 °C to determine the reversibility of the process. Although aluminum deposition was observed in the electrolyte solution containing dimethyl sulfone and aluminum chloride, multiple oxidation peaks were observed in the dissolution reaction. The morphology of the deposited aluminum was observed using a scanning electron microscope, and it was found that the shape of the aluminum deposits varied greatly depending on the deposition potential. Electrochemical measurements under various conditions revealed that the oxidative decomposition of the electrolyte at the Al counter electrode during the aluminum deposition on the working electrode resulted in a large amount of aluminum oxide contamination in the deposited aluminum. To prevent such a reaction, we designed a cell in which the potential of the counter electrode did not exceed the electrochemical potential window and observed a very reversible aluminum deposition dissolution reaction. Finally, we successfully charged/discharged the Al negative electrode using a dimethyl sulfone-based electrolyte. These findings are important because the electrolytes with dimethyl sulfone and aluminum chloride are compatible as electrolytes for rechargeable aluminum batteries and because they highlight the precautions that need to be taken in their application.</p>

    DOI： 10.5796/electrochemistry.24-00092

  • Si particle size blends to improve cycling performance as negative electrode for all-solid-state lithium-ion battery Reviewed

    Chiku M.

    Electrochimica Acta   505   2024.11（ ISSN:00134686 ）

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    DOI： 10.1016/j.electacta.2024.144963

  • High Surface Area Tungsten Oxide as a Positive Electrode Material for Aluminum Rechargeable Batteries Reviewed

    CHIKU Masanobu, YAMATANI Masahiro, HIGUCHI Eiji, INOUE Hiroshi

    Electrochemistry   92 ( 9 )   097002 - 097002   2024.09（ ISSN:13443542 ） （ eISSN:21862451 ）

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：Domestic journal  

    <p>WO<sub>3</sub> with a high specific surface area of more than 100 m<sup>2</sup> g<sup>−1</sup> was synthesized by a simple sol-gel method to explore the potential of group VI metal oxides as the positive electrode active material for aluminum rechargeable batteries. Charge/discharge measurements indicated more than 130 mAh g<sup>−1</sup> capacity, which is the largest WO<sub>3</sub> electrode for an aluminum rechargeable battery. The capacity retention after 50 cycles was 80 %. From XPS measurements, the valence of tungsten changed during charging/discharging, and the content of aluminum also changed; therefore, intercalation/deintercalation type charge/discharge mechanism was confirmed for the WO<sub>3</sub> electrode. These results indicate that WO<sub>3</sub> with high specific surface area has high potential as a positive electrode material for aluminum rechargeable batteries.</p>

    DOI： 10.5796/electrochemistry.24-00056

  • Effect of Silver Modification on the Kinetics and Mechanisms of an Electrochemical Glycerol Oxidation Reaction at a Platinum Electrode in an Alkaline Medium Reviewed International coauthorship

    Takuya Hamada, Akihisa Ochi, Masanobu Chiku, Eiji Higuchi, Clive A. Randall, Hiroshi Inoue

    ACS Applied Energy Materials   7 ( 5 )   1970 - 1982   2024.02

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    DOI： 10.1021/acsaem.3c03111

  • Investigating the Origins of the pH-Dependent Oxidation of Glycerol over Platinum Using Differential Electrochemical Mass Spectrometry Reviewed International coauthorship OA

    Hamada T.

    Journal of Physical Chemistry C   2024（ ISSN:19327447 ）

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    Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    DOI： 10.1021/acs.jpcc.4c01372

    Repository URL： http://hdl.handle.net/10466/0002002745

  • Manganese oxides as positive electrode materials for rechargeable aluminum batteries Reviewed

    Masanobu Chiku, Yihan Tian, Eiji Higuchi, Hiroshi Inoue

    Journal of Alloys and Compounds   969   172430   2023.12（ ISSN:09258388 ）

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    DOI： 10.1016/j.jallcom.2023.172430

  • Effect of SnO2 and Rh modifications on CO-stripping kinetics and ethanol oxidation mechanism of Pt electrode Reviewed

    Nguyen Trung Kien, Ai Ozaki, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    Research on Chemical Intermediates   50 ( 1 )   339 - 351   2023.11（ ISSN:09226168 ）

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    DOI： 10.1007/s11164-023-05180-7

  • Effect of Surface Composition on Electrochemical Oxidation Reaction of Carbon Monoxide and Ethanol of PtxRh1-x Solid Solution Electrodes OA

    Nguyen Trung Kien, Haruki Yara, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    Interational Journal of Electrochemistry   2023   2386013 - (10 pages)   2023.11

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    DOI： https://doi.org/10.1155/2023/2386013

    Repository URL： http://hdl.handle.net/10466/0002002611

  • Electrocatalytic performances of oxygen-deficient titanium dioxide nanosheet coupled palladium nanoparticles for oxygen reduction and hydrogen evolution reactions Reviewed

    Keerti M. Naik, Eiji Higuchi, Hiroshi Inoue

    International Journal of Hydrogen Energy   48 ( 79 )   30741 - 30750   2023.05（ ISSN:03603199 ）

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    DOI： 10.1016/j.ijhydene.2023.04.263

  • Analysis of the Irreversible Capacity in an All-Solid-State Lithium Battery with a Porous Current Collector Using Soft X-ray Emission Spectroscopy Reviewed

    Shota Shinzo, Eiji Higuchi, Masanobu Chiku, Akitoshi Hayashi, Hiroshi Inoue

    Journal of Physical Chemistry C   127 ( 16 )   7602 - 7608   2023.04（ ISSN:19327447 ）

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   International / domestic magazine：International journal  

    DOI： 10.1021/acs.jpcc.2c09084

  • Bifunctional intermetallic PdZn nanoparticle-loaded deficient TiO2 nanosheet electrocatalyst for electrochemical water splitting Reviewed

    Keerti M. Naik, Kanaru Hashisake, Eiji Higuchi, Hiroshi Inoue

    4 ( 2 )   561 - 569   2022.11

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    DOI： 10.1039/d2ma00904h

  • Activity and durability of intermetallic PdZn electrocatalyst for ethanol oxidation reaction Reviewed

    Nguyen Trung Kien, Kanaru Hashisake, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    RESEARCH ON CHEMICAL INTERMEDIATES   48 ( 9 )   3795 - 3810   2022.09（ ISSN:0922-6168 ） （ eISSN:1568-5675 ）

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    Intermetallic or substitutional solid-solution PdZn alloy nanoparticle (NP)-loaded carbon black (i-PdZn/C, s-PdZn/C) was prepared by reducing equimolar palladium acetate and zinc acetate in ethanol dispersion of carbon black with sodium tetrahydroborate with and without the following heat-treatment in an autoclave. The Pd 3d and Zn 2p core-level spectra exhibited that the binding energy of Pd and Zn for i-PdZn/C shifted positively and negatively compared to that for metallic Pd and Zn sheets, respectively, suggesting a strong electronic interaction between Pd and Zn. In contrast, for s-PdZn/C, the binding energy for Pd shifted positively, but only a peak for ZnO was observed. In 1 M KOH aqueous solution at 20 oC, the Zn content of s-PdZn/C was almost zero in 30 min, while i-PdZn/C held the Zn component of 75% at 20 oC and 70% at 60 oC after 30 min, indicating that i-PdZn/C was much more tolerant to alkaline medium than s-PdZn/C. Consequently, s-PdZn NPs were changed to porous Pd NPs, whereas i-PdZn NPs were changed to core-shell NPs whose surface was porous Pd. In the (1 M KOH + 1 M ethanol) aqueous solution at 20 oC, i-PdZn/C and s-PdZn/C significantly enhanced the activity for ethanol oxidation reaction (EOR) compared to Pd NP-loaded carbon black (Pd/C). In the potentiostatic electrolysis at 0.7 V for 10,000 s, the deterioration of i-PdZn/C was effectively delayed compared to Pd/C and s-PdZn/C due to the electronic effect of the intermetallic PdZn core.

    DOI： 10.1007/s11164-022-04780-z

  • Intermetallic PdZn nanoparticles loaded on deficient TiO2 nanosheets as a support: a bifunctional electrocatalyst for oxygen reduction in PEMFCs and the glycerol oxidation reactions Reviewed

    Keerti M. Naik, Kanaru Hashisake, Takuya Hamada, Eiji Higuchi, Hiroshi Inoue

    Journal of Materials Chemistry A   10 ( 26 )   13987 - 13997   2022.07（ ISSN:2050-7488 ） （ eISSN:2050-7496 ）

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    Exploring simple and flexible methods to synthesize an oxygen reduction reaction (ORR) catalyst with high catalytic activity is of great significance for the large-scale application of fuel cells. Here we developed an intermetallic PdZn on a TiO2-x NS support catalyst by a simple strategy for large-scale production through an impregnation process involving low temperature annealing. This electrocatalyst prepared by a simple and single step exhibited better ORR activities in both acidic and alkaline solutions at room temperature with a higher value of electrochemical active surface area (ECSA). The repeated square-wave potential cycling test at 80 degrees C over 10 000 cycles confirmed the durability of the catalyst. The fuel cell using the PdZn/TiO2-x NS catalyst showed a high power density of 855 mW cm(-2), which exceeds that of the PdZn supported carbon catalyst. Also, the proposed catalyst showed excellent stability over more than 100 h in proton-exchange membrane fuel cell (PEMFC) performance. Thus, the proposed TiO2-x NSs will be an alternative to a carbon support in future PEMFC technology. Furthermore, PdZn/TiO2-x NSs also showed higher activity and stability for the glycerol oxidation reaction (GOR) and higher selectivity for glycerate production than PdZn/C. Hence, the PdZn/TiO2-x NS electrocatalyst opens up new avenues towards energy conversion devices such as DAFCs and metal-air batteries. This new study provides an opportunity for further research to rationally design more carbon free supported nanostructured intermetallics by using different transition metals for efficient electrochemical energy storage devices.

    DOI： 10.1039/d2ta03736j

  • Communication-Porous Current Collector with Randomly Distributed Pores for Li Metal Negative Electrode in All-Solid-State Batteries Reviewed

    Shota Shinzo, Miho Shoji, Eiji Higuchi, Masanobu Chiku, Hiroshi Inoue

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   169 ( 4 )   040521   2022.04（ ISSN:0013-4651 ） （ eISSN:1945-7111 ）

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    The increase in mechanical stress at the interface of the Li metal and solid electrolyte induces dendritic Li growth in all-solid-state Li batteries. We demonstrated the increasing stress in Li metal was significantly reduced by porous current collectors (PCCs). Here, we demonstrate the PCC with 3- dimensional pores prepared by sintering a mixture of micrometer-sized Ni spherical particles and polymethyl methacrylate spheres as a template of pores. The low-cost sintering method realized not only reduction of the preparation cost of PCCs, but high internal short circuit resistance comparable to the expensive PCCs with regularly arranged through-holes using electroforming methods.

    DOI： 10.1149/1945-7111/ac62c0

  • High Rate Lithium Metal Plating and Stripping on Solid Electrolyte Using Porous Current Collector with High Aperture Ratio Reviewed

    S. Shinzo, E. Higuchi, M. Chiku, A. Hayashi, H. Inoue

    ACS Applied Energy Materials   4 ( 11 )   12613 - 12622   2021.10

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    Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

  • Defect-Rich Black Titanium Dioxide Nanosheet-Supported Palladium Nanoparticle Electrocatalyst for Oxygen Reduction and Glycerol Oxidation Reactions in Alkaline Medium Reviewed

    K. M. Naik, T. Hamada, E. Higuchi, H. Inoue

    ACS Applied Energy Materials   4 ( 11 )   12391 - 12402   2021.10

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    Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

  • Effect of Rh Coverage on CO-Adsorption and -Stripping Behaviors of Rhodium-Adlayer-Modified Platinum Electrodes Reviewed

    Toyoki Imada, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    Journal of Physical Chemistry C   125 ( 27 )   14616 - 14626   2021.07（ ISSN:1932-7447 ） （ eISSN:1932-7455 ）

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    Pt/Rh bimetal catalysts are often used in various reactions such as alcohol oxidation and hydrogenation. For comparison, their catalytic activity is often standardized by the real surface area or electrochemical surface area. However, the conventional method of using the electric charge for hydrogen desorption is difficult to apply to Pt/Rh bimetal catalysts because the potential regions of hydrogen desorption for Pt and Rh overlap. In this study, Rh-adlayer-modified Pt (Rh-x/Pt) electrodes with different Rh coverages were prepared by underpotential depositions of Cu adatoms at different potentials followed by galvanic replacement of Cu with rhodium, and CO stripping was applied to determine the Rh coverages of these electrodes. No CO that had been adsorbed on a Pt electrode was removed by potentiostatic CO oxidation at 0.75 V vs reversible hydrogen electrode for 15 s in an Ar-saturated 0.5 M sulfuric acid solution at 5 degrees C, but 85% of CO on an Rh electrode was removed. The Rh coverages for the Rh-x/Pt electrodes corrected on the basis of this result were in good agreement with the corresponding Rh coverages estimated from the electric charge for the stripping of the Cu adlayer. Moreover, the Rh-x/Pt electrodes exhibited noteworthy CO-stripping and CO-adsorption behaviors. A single CO-stripping cyclic voltammetry peak was observed regardless of Rh coverage, and shifted toward lower potential as the Rh coverage was increased. This result resembled the trend of initiation potentials of chemisorbed oxygen formation, suggesting a bifunctional mechanism. In infrared reflectance-absorption spectra of the CO-adsorbed Rh-x/Pt electrodes, a single asymmetric band assigned to "atop" CO was observed irrespective of the Rh coverage, and shifted to lower wavenumbers as the Rh coverage was increased. The d-band center estimated from the valence level spectra of the Rh-x/Pt electrodes, which reflected the Pt 5d electronic structure, shifted downward as the Rh coverage was increased.

    DOI： 10.1021/acs.jpcc.1c02039

  • Electrochemical Toluene Hydrogenation Using Binary Platinum-Based Alloy Nanoparticle-Loaded Carbon Catalysts Reviewed

    Toyoki Imada, Yusuke Iida, Yousuke Ueda, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    CATALYSTS   11 ( 3 )   318 - (14 pages)   2021.03（ eISSN:2073-4344 ）

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    A couple of toluene (TL) and its hydrogenation product, methylcyclohexane (MCH), are promising high-density hydrogen carriers to store and transport large amounts of hydrogen. Electrochemical hydrogenation of TL to MCH can achieve energy savings compared with hydrogenation using molecular hydrogen generated separately, and development of highly active catalysts for electrochemical TL hydrogenation is indispensable. In this study, binary Pt3M (M = Rh, Au, Pd, Ir, Cu and Ni) alloy nanoparticle-loaded carbon catalysts were prepared by a colloidal method, and their activity for electrochemical TL hydrogenation was evaluated by linear sweep voltammetry. Each Pt3M electrode was initially activated by 100 cycles of potential sweep over a potential range of 0-1.2 or 0.8 V vs. reversible hydrogen electrode (RHE). For all activated Pt3M electrodes, the cathodic current density for electrochemical TL hydrogenation was observed above 0 V, that is the standard potential of hydrogen evolution reaction. Both specific activity, cathodic current density per electrochemical surface area, and mass activity, cathodic current density per mass of Pt3M, at 0 V for the Pt3Rh/C electrode were the highest, and about 8- and 1.2-times as high as those of the commercial Pt/C electrode, respectively, which could mainly be attributed to electronic modification of Pt by alloying with Rh. The Tafel slope for each activated Pt3M/C electrode exhibited the alloying of Pt with the second metals did not change the electrochemical TL hydrogenation mechanism.

    DOI： 10.3390/catal11030318

  • Effect of Rhodium Modification on Activity of Platinum Nanoparticle-Loaded Carbon Catalysts for Electrochemical Toluene Hydrogenation Reviewed

    Toyoki Imada, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    ACS Catalysis   10 ( 22 )   13718 - 13728   2020.11

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

  • Microband-Array Electrode Technique for the Detection of Reaction Distributions in the Depth Direction of Composite Electrodes for the All-Solid-State Lithium-ion Batteries Reviewed

    M. Chiku, K. Ota, E. Higuchi, H. Inoue

    ACS Omega   5 ( 27 )   16739 - 16743   2020.06

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

  • Pt nanoparticle-decorated two-dimensional oxygen-deficient TiO2 nanosheets as an efficient and stable electrocatalyst for the hydrogen evolution reaction Reviewed

    Keerti M. Naik, Eiji Higuchi, Hiroshi Inoue

    Nanoscale   12 ( 20 )   11055 - 11062   2020.05（ ISSN:2040-3364 ） （ eISSN:2040-3372 ）

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    Developing novel hydrogen evolution reaction (HER) catalysts with high activity, high stability and low cost is of great importance for the ever-broader applications of hydrogen energy. Among the conventionally used platinum-based heterogeneous catalysts, the high consumption and low utilization efficiency of precious platinum are the most crucial issues. Herein we present a facile approach to prepare an effective HER catalyst with platinum nanoparticles dispersed on oxygen-deficient TiO(2-x)nanosheets (NSs). The fabricated Pt-TiO2-xNS electrocatalyst shows an overpotential of 35 mV at 10 mA cm(-2)for the HER in 0.5 M H2SO4, which is highly comparable to that of commercial Pt/C (34 mV). More attractively, the Pt-TiO2-xNS electrocatalyst largely enhanced the mass activity (MA) of Pt and electrochemical stability compared to commercial Pt/C. The excellent HER performance of Pt-TiO(2-x)NSs is attributed to the synergetic effect between highly dispersed Pt species and TiO(2-x)NSs with oxygen vacancies, which enhances both electrocatalytic activity and durability over a wide pH range. This strategy can provide insights into constructing highly efficient catalysts and their support for different energy-related applications.

    DOI： 10.1039/d0nr02092c

  • Control of Dendritic Growth of Lithium Metal in All-Solid-State Lithium Metal Batteries: Effect of Current Collector with Micro-Sized Pores Reviewed

    S. Shinzo, E. Higuchi, M. Chiku, A. Hayashi, H. Inoue

    ACS Applied Materials & Interfaces   124 ( 10 )   22798 - 22803   2020.04

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

  • Two-dimensional oxygen-deficient TiO2 nanosheets-supported Pt nanoparticles as durable catalyst for oxygen reduction reaction in proton exchange membrane fuel cells Reviewed

    Keerti M. Naik, Eiji Higuchi, Hiroshi Inoue

    Journal of Power Surces   455   227972   2020.04（ ISSN:0378-7753 ） （ eISSN:1873-2755 ）

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    The activity and stability for oxygen reduction reaction (ORR) of the cathode catalyst of proton exchange membrane fuel cells (PEMFCs) are important issues that should even be considered for practical application. Modifying the catalyst electronic structure and finding durable supports are good approaches for improving these properties. Carbon-free multifunctional oxygen-deficient titanium oxide nanosheets (TiO2-x NSs) are established as a catalyst support for fuel cell application. The TiO2-x NSs support shows improved electronic conduction compared to TiO2 NSs. Pt nanoparticle-loaded TiO2-x NSs (Pt-TiO2-x, NSs) catalyst prepared in this study shows excellent activity towards the ORR. This is ascribed to a strong metal-support interaction (SMSI) between the Pt nanoparticles (NPs) and the TiO2-x NSs support. In addition, the TiO2-x NSs catalyst shows outstanding durability in repeating square-wave potential cycling tests at 80 degrees C over 10000 cycles. The fuel cell using the Pt-TiO2-x NSs catalyst shows high power density (958 mWcm(-2)), which exceeds that of the commercial Ptloaded carbon catalyst. Also, the projected catalyst showed an excellent stability (more than 100 h) in fuel cell performance. Thus, the proposed TiO2-x NSs will be a promising carbon-free support to be loaded in the future PEMFCs technology.

    DOI： 10.1016/j.jpowsour.2020.227972

  • Copper chloride as a conversion-type positive electrode for rechargeable aluminum batteries Reviewed

    Masanobu Chiku, Takeshi Kunisawa, Eiji Higuchi, Hiroshi Inoue

    RSC ADVANCES   9 ( 71 )   41475 - 41480   2019.12（ eISSN:2046-2069 ）

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    Copper chloride (CuCl2) was investigated for the first time as conversion-type positive electrode material in a rechargeable Al battery. The electrode was reversibly charged and discharged in an electrolyte solution of AlCl3, dipropylsulfone, and toluene (1 : 10 : 5 molar ratio). The initial discharge capacity was about 370 mA h (g-CuCl2)(-1) at 0.028C-rate (11 mA (g-CuCl2)(-1)), which was almost the same as the theoretical value (399 mA h (g-CuCl2)(-1)) and higher than that of insertion-type positive electrode materials as used in the rechargeable Al battery. Moreover, a two-stage discharge plateau voltage was observed at 1.5 V and 0.8 V, which was higher than other conversion type positive electrodes for the aluminum rechargeable battery. The high discharge voltage realized a high energy density of 426 mW h (g-CuCl2)(-1), which is the highest energy density compared with other conversion type positive electrodes. Two different strategies were implemented to increase the lifetime of the cell, namely, increasing the upper cut-off voltage and decreasing the particle size of CuCl2. The discharge capacity for the electrode at the second cycle was threefold that for a pristine CuCl2 electrode.

    DOI： 10.1039/c9ra09158k

  • Mechanism of Glycerol Oxidation Reaction on the Silver-modified Palladium Electrodes in Alkaline Medium Reviewed

    H. Inoue, S. Kimura, Y. Teraoka, M. Chiku, E. Higuchi, B. T. X. Lam

    Int. J. Hydrogen Energy 雑誌 Elsevier   Vol. 43 ( No. 40 )   18664 - 18671   2018.10

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    Kind of work：Joint Work  

  • Electrochemical Hydrogenation Reaction of Toluene with PtxRu Alloy Catalysts-Loaded Gas Diffusion Electrodes Reviewed

    E. Higuchi, Y. Ueda, M. Chiku, H. Inoue

    Electrocatalysis 雑誌 Springer-Verlag   Vol.9 ( No.2 )   226 - 235   2018.03

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    Kind of work：Joint Work  

  • Appropriate Arrangement of Rh for Selective CO2 Formation in Ethanol Oxidation Reaction with Pt/Rh/SnO2 Catalyst Reviewed

    P. T. Mai, M. Chiku, E. Higuchi, H. Inoue

    J. Electrochem. Soc. 雑誌 Electrochemical Society   Vol.164 ( No.9 )   F1011 - F1013   2017.07

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    Kind of work：Joint Work  

  • Ti-V-Cr-Ni Alloys as High Capacity Negative Electrode Active Materials for Use in Nickel-Metal Hydride Batteries Reviewed

    H. Inoue, N. Kotani, M. Chiku, E. Higuchi

    Int. J. Hydrogen Energy 雑誌   41 ( 23 )   9939 - 9947   2016.06

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    Kind of work：Joint Work  

  • Preparation of PdAg and PdAu Nanoparticle-loaded Carbon Black Catalysts and Their Electrocatalytic Activity for the Glycerol Oxidation Reaction in Alkaline Medium Reviewed

    B. T. X. Lam, M. Chiku, E. Higuchi, H. Inoue

    J. Power Sources 雑誌   297   149 - 157   2015.11

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    Kind of work：Joint Work  

  • Electrocatalytic Activity for Oxygen Reduction Reaction of Pt/Au/CB Catalyst with Different Core Sizes Reviewed

    E. Higuchi, K. Okada, M. Chiku, H. Inoue

    Electrochim. Acta 雑誌   179   100 - 107   2015.10

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    Kind of work：Joint Work  

  • Simple Preparation of Pd Core Nanoparticles for Pd Core/Pt Shell Catalyst and Evaluation of Activity and Durability for Oxygen Reduction Reaction Reviewed

    H. Inoue, R. Sakai, T. Kuwahara, M. Chiku, E. Higuchi

    Catalysts 雑誌   5   1375 - 1387   2015.08

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    Kind of work：Joint Work  

  • Effect of Pretreatment on the Surface Structure of a Co(OH)2 electrode Reviewed

    E. Higuchi, H. Otsuka, M. Chiku, H. Inoue

    J. Power Sources 雑誌 Elsevier   248   762 - 768   2014.02

  • Simple Preparation of Au Nanoparticles and Their Application to Au Core/Pt Shell Catalysts for Oxygen Reduction Reaction Reviewed

    E. Higuchi, K. Hayashi, M. Chiku, H. Inoue

    Electrocatalysis 雑誌 Springer-Verlag   3   274 - 283   2012.12

  • Electrochemical Hydrogen Production System from Ammonia Borane in Methanol Solution Reviewed

    H. Inoue, T. Yamazaki, T. Kitamura, M. Shimada, M. Chiku, E. Higuchi

    Electrochim.Acta 雑誌 Elsevier   82   392 - 396   2012.11

  • Charge-Discharge Performance of Cr-substituted V-based Hydrogen Storage Alloy Negative Electrodes for Use in Nickel-Metal Hydride Batteries Reviewed

    H. Inoue, S. Koyama and E. Higuchi

    Electrochim. Acta Elsevier   59   23 - 31   2012.01

  • Electrocatalytic Activity for Oxygen Reduction Reaction of Pt Nanoparticle Catalysts with Narrow Size Distribution Prepared from [Pt3(CO)3(μ-CO)3]n2− (n = 3-8) Complexes Reviewed

    E. Higuchi, A. Taguchi, K. Hayashi, and H. Inoue

    J. Electroanal. Chem. Elsevier   663 ( 2 )   83 - 89   2011.12

  • Preparation and Characterization of Ni-based Positive Electrodes for Use in Aqueous Electrochemical Capacitors Reviewed

    H. Inoue, Y. Namba and E. Higuchi

    J. Power Sources 雑誌 Elsevier   195   6239 - 6244   2010.09

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    Kind of work：Joint Work  

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Books and Other Publications

  • Chemistry of Batteries for Mobilities

    Hiroshi Inoue（ Role： Joint author ,  Nickel-Metal Hydride Battery: Story of Another High Performance Rechargeable Battery Born in Japan）

    2022.03  （ ISBN:9784759814040 ）

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    Total pages：176   Responsible for pages：97-101   Book type：Scholarly book

  • Core-Shell and Yolk-Shell Nanocatalysts

    Hiroshi Inoue, Eiji Higuchi（ Role： Joint author）

    Springer Nature Singapore Pte Ltd  2021.05  （ ISBN:9789811604621 ）

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    Responsible for pages：275-288  

  • コンパクト電気化学

    岩倉千秋、森田昌行、井上博史（ Role： Joint author）

    丸善  2019.05  （ ISBN:978-4-621-30380-1 ）

  • Advanced Materials for Clean Energy

    Hiroshi Inoue, Eiji Higuchi（ Role： Joint author）

    CRC Press  2015.04  （ ISBN:9781482205787 ）

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    Responsible for pages：201-228  

  • New In-Situ Characterization Technique of Active Materials in Batteries: Electrochemical Acoustic Emission Method (Chap. 6)

    H, Inoue（ Role： Joint author）

    In Tech  2012.03 

  • Eco-friendly Electrochemical Devices Using “Water” and “Hydrogen” as Key Substances in the 21st Century

    H. Inoue（ Role： Joint author）

    NOVA publishers  2010 

  • ニッケル亜鉛電池の開発動向 （第3編第2章）

    井上博史（ Role： Joint author）

    シーエムシー出版  2009.11 

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Presentations

  • 高分子溶液電解質の水系電池への適用性 Domestic conference

    中田明良，井上博史，森田昌行，小久見善八，安部武志

    電気化学会第92回大会  2025.03  電気化学会

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    Presentation type：Oral presentation (general)  

    Venue：東京  

  • MXene (Ti3C2Tx)を用いたアルミニウム二次電池の開発 Domestic conference

    亀井光，樋口栄次，知久昌信，井上博史

    電気化学会第92回大会  2025.03  電気化学会

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    Presentation type：Oral presentation (general)  

    Venue：東京  

  • アルカリ水電解における起動/停止時のルテニウム系酸化物カソードの構造解析と電気化学特性評価 Domestic conference

    樋口栄次，濱田拓哉，三宅輝明，知久昌信，井上博史

    第48回電解技術討論会  2024.12  電気化学会電解科学技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：仙台  

  • 水や水素がかかわる電解反応の電極触媒開発 Invited Domestic conference

    井上博史

    第48回電解技術討論会  2024.12  電気化学会電解科学技術委員会

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    Venue：仙台  

  • アルカリ水溶液中でのRu-lanthanoid系酸化物電極の水素発生反応における触媒活性と耐久性の評価 Domestic conference

    東田知紘，知久昌信，樋口栄次，井上博史

    2024年度電気化学会関西支部第3回関西電気化学研究会  2024.11  電気化学会関西支部

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    Presentation type：Poster presentation  

    Venue：京都  

  • カードランヒドロゲル電解質膜の作製ならびにZn/MnO2二次電池への応用 Domestic conference

    吉田侃生, 知久昌信, 樋口栄次, 井上博史

    2024年度電気化学会関西支部第3回関西電気化学研究会  2024.11  電気化学会関西支部

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    Presentation type：Poster presentation  

    Venue：京都  

  • アルギン酸ヒドロゲル電解質膜の作製ならびに擬固体Zn/MnO2二次電池の構築 Domestic conference

    王　寧致, 知久昌信, 樋口栄次, 井上博史

    2024年度電気化学会関西支部第3回関西電気化学研究会  2024.11  電気化学会関西支部

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    Presentation type：Poster presentation  

    Venue：京都  

  • 液相混合による全固体リチウム二次電池用MoS2正極の開発 Domestic conference

    藤原一登、樋口英二、知久昌信、井上博史

    第65回電池討論会  2024.11  電気化学会電池技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：京都  

  • カードランヒドロゲル電解質膜を用いたMnO2 / Zn二次電池の充放電特性 Domestic conference

    吉田侃生，知久昌信，樋口栄次，井上博史

    第65回電池討論会  2024.11  電気化学会電池技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：京都  

  • Alginate-Based Hydrogel Electrolyte Membranes for Quasi-Solid-State Zinc Rechargeable Batteries International conference

    Ningzhi Wang, Eiji Higuchi, Masanobu Chiku, Hiroshi Inoue

    The 10th ECUST-HU-TKU-KIST-OMU-IHU-KMITL-UTAR-TNU-HUIT Joint Symposium on Advanced Materials and Applications (JSAMA-10)  2024.10  JSAMA-10

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    Presentation type：Poster presentation  

    Venue：Shanghai, China  

  • Development of Zinc Rechargeable Battery Using Curdlan Hydrogel Electrolyte Membrane International conference

    Tsuyoki Yoshida, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    The 10th ECUST-HU-TKU-KIST-OMU-IHU-KMITL-UTAR-TNU-HUIT Joint Symposium on Advanced Materials and Applications (JSAMA-10)  2024.10  JSAMA-10

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    Presentation type：Poster presentation  

    Venue：Shanghai, China  

  • グラファイト正極を用いるアルミニウム二次電池の電気化学特性に及ぼす電解液のアニオン組成の影響 Domestic conference

    楊　雪，樋口栄次，知久昌信，井上博史

    第14回CSJ化学フェスタ2024  2024.10  日本化学会

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    Presentation type：Poster presentation  

    Venue：東京  

  • A Low-Cost Xanthan Gum-Based Hydrogel Electrolytes for Quasi-Solid-State Rechargeable Alkaline Zinc Batteries International conference

    Patrick Dedetemo Kimilita, Hiroshi Inoue

    PRiME2024  2024.10  ECS and ECSJ

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    Presentation type：Oral presentation (general)  

    Venue：Honolulu, USA  

  • Polysaccharide-Based Hydrogel Electrolyte Membranes for Quasi-Solid-State Rechargeable Alkaline Zinc Batteries International conference

    Hiroshi Inoue, Masanobu Chiku, Eiji Higuchi, Cheng Zhen

    PRiME2024  2024.10  ECS and ECSJ

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    Presentation type：Oral presentation (general)  

    Venue：Honolulu, USA  

  • Development of Cathode for All-Solid-State Sulfide Secondary Batteries Using Exfoliated MoS2 by Liquid Phase Mixing International conference

    Kazuto Fujiwara, Eiji Higuchi, Masanobu Chiku, Hiroshi Inoue

    PRiME2024  2024.10  ECS and ECSJ

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    Presentation type：Poster presentation  

    Venue：Honolulu, USA  

  • Effect of Electrolyte Composition on Positive Electrode Properties of Rechargeable Aluminum-Graphite Batteries International conference

    Xue Yang, Eiji Higuchi, Masanobu Chiku, Hiroshi Inoue

    PRiME2024  2024.10  ECS and ECSJ

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    Presentation type：Poster presentation  

    Venue：Honolulu, USA  

  • Effect of KOH Concentration on Viscoelastic and Conformational Changes of Xanthan Gum-Based Hydrogel Electrolytes International conference

    Tomoko Morisaki, Masanobu Chiku, Eiji Higuchi, and Hiroshi Inoue

    PRiME2024  2024.10  ECS and ECSJ

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    Presentation type：Poster presentation  

  • Development of Hybrid Capacitor with Mesopores-Rich Activated Carbon Positive Electrode and Aluminum Metal Negative Electrode International conference

    Masanobu Chiku, Shota Uchida, Eiji Higuchi, Hiroshi Inoue

    PRiME2024  2024.10  ECS and ECSJ

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    Presentation type：Oral presentation (general)  

    Venue：Honolulu, USA  

  • Polysaccharide-Based Hydrogel Electrolytes for Use in Quasi-Solid-State Rechargeable Zinc Batteries Invited International conference

    Hiroshi Inoue, Patrick Dedetemo Kimilita

    11th International Workshop on Advanced Materials Science and Nanotechnology (IWAMSN2024)  2024.09  IWAMSN2024

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    Presentation type：Oral presentation (invited, special)  

    Venue：Da Nang, Vietnam  

  • 示差電気化学質量分析法を用いたPt電極上でのグリセリン酸化反応機構のpH依存性の解析 International coauthorship Domestic conference

    濱田拓哉，Abigail R. Circelli, 井上博史, Clive A. Randall, Ezra L. Clark

    第33回電極材料研究会  2024.07  電気化学会電解科学技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：横浜  

  • 異なる基板上に担持した金属酸化物カソードのアルカリ水溶液中での水素発生反応における触媒活性と耐久性の評価 Domestic conference

    樋口栄次，東田知紘，三宅輝明，知久昌信，井上博史

    第33回電極材料研究会  2024.07  電気化学会電解科学技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：横浜  

  • メカノケミカル法で作製した導電性チタン酸化物のXANESおよびEXAFS解析 Domestic conference

    井上 博史, 李 昱江, 清水 祐太, 知久 昌信, 樋口 栄次, 鐘 承超, 折笠有基

    2024年度立命館大学SRセンター研究成果報告会  2024.06  立命館大学

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    Presentation type：Poster presentation  

    Venue：草津  

  • Conductive Titanium Oxide Catalyst for Electrochemical Hydrogen Production International conference

    Hiroshi Inoue, Yuta Shimizu, Masanobu Chiku, Eiji Higuchi

    18th International Symposium on Metal-Hydrogen Systems (MH2024)  2024.05  MH2024

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    Presentation type：Oral presentation (general)  

    Venue：Saint-Malo, France  

  • Sodium Alginate-Based Hydrogel Electrolyte Membrane for Rechargeable Zinc Batteries International conference

    Ningzhi Wang, Eiji Higuchi, Masanobu Chiku, Hiroshi Inoue

    12th Asian Conference on Electrochemical Power Sources (ACEPS-12)  2024.05 

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    Presentation type：Poster presentation  

    Venue：Osaka  

  • Novel Starch-Based Hydrogel Electrolyte for Zinc Anode Rechargeable Battery International conference

    Cheng Zhen, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    12th Asian Conference on Electrochemical Power Sources (ACEPS-12)  2024.05 

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    Presentation type：Poster presentation  

    Venue：Osaka  

  • Xanthan Gum-Based Hydrogel Electrolytes for All-Solid-State Alkaline Zinc Anode Rechargeable Batteries International conference

    Patrick Dedetemo Kimilita, Hiroshi Inoue

    12th Asian Conference on Electrochemical Power Sources (ACEPS-12)  2024.05 

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    Presentation type：Oral presentation (general)  

    Venue：Osaka  

  • Novel Polymer Hydrogel Electrolyte Membrane for Rechargeable Zinc Batteries International conference

    Tsuyoki Yoshida, Masanobu Chiku, Eiji Higuchi, and Hiroshi Inoue

    12th Asian Conference on Electrochemical Power Sources (ACEPS-12)  2024.05 

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    Presentation type：Poster presentation  

    Venue：Osaka  

  • Effect of Anion Composition of Electrolyte on Electrochemical Properties of Graphite Positive Electrode for Rechargeable Aluminum Batteries International conference

    Xue Yang, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    12th Asian Conference on Electrochemical Power Sources (ACEPS-12)  2024.05 

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    Presentation type：Poster presentation  

    Venue：Osaka  

  • デンプン水溶液およびデンプンヒドロゲル電解質膜中での亜鉛の析出溶解挙動 Domestic conference

    甄　誠、知久昌信、樋口栄次、伊藤　隆、井上博史

    電気化学会第91回大会  2024.03  電気化学会

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    Presentation type：Oral presentation (general)  

    Venue：名古屋  

  • 新規高分子ヒドロゲル電解質膜の作製ならびに亜鉛負極二次電池への応用 Domestic conference

    吉田侃生, 知久昌信, 樋口栄次, 井上博史

    電気化学会第91回大会  2024.03  電気化学会

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    Presentation type：Oral presentation (general)  

    Venue：名古屋  

  • 亜鉛負極二次電池用アルギン酸ナトリウムヒドロゲル電解質膜の開発 Domestic conference

    王　寧致, 知久昌信, 樋口栄次, 井上博史

    電気化学会第91回大会  2024.03  電気化学会

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    Presentation type：Oral presentation (general)  

    Venue：名古屋  

  • 液相混合による剥離型MoS2を用いた硫化物系全固体二次電池用正極の開発 Domestic conference

    藤原一登，樋口栄次，知久昌信，井上博史

    電気化学会第91回大会  2024.03  電気化学会

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    Presentation type：Oral presentation (general)  

    Venue：名古屋  

  • Effect of Ag Modification on the Mechanism of Electrochemical Glycerol Oxidation Reaction at Pt Electrode in Alkaline Medium International conference

    Takuya Hamada, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    11th Kyoto International Forum for Environment and Energy (KIFEE-11)  2024.03 

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    Presentation type：Poster presentation  

    Venue：Tendo  

  • Electrochemical Properties of Graphite Positive Electrode for Rechargeable Aluminum Batteries International conference

    Xue Yang, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    11th Kyoto International Forum for Environment and Energy (KIFEE-11)  2024.03 

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    Presentation type：Poster presentation  

    Venue：Tendo  

  • High-performance xanthan gum-based alkaline hydrogel electrolytes for all-solid-state rechargeable manganese dioxide/zinc batteries Domestic conference

    Patrick Dedetemo Kimilita, Yuki Tabata, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    2023.11 

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    Presentation type：Oral presentation (general)  

  • RuO2担持カソードでの起動停止サイクルに伴うRuO2触表面の構造解析 Domestic conference

    樋口栄次，東田知紘，外山夏海，知久昌信，井上博史

    第47回電解技術討論会  2023.11  電気化学会電解科学技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：大阪  

  • アルカリ水溶液中でのAg修飾Pt電極上における電気化学的グリセリン酸化反応機構の解析 Domestic conference

    濱田拓哉，知久昌信，樋口栄次，井上博史

    第47回電解技術討論会  2023.11  電気化学会電解科学技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：大阪  

  • All-Solid-State Capacitors Using Alginate-Based Polymer Hydrogel Electrolyte International conference

    Patrick Dedetemo Kimilita, Takuya Imawaka, Masanobu Chiku, Eiji Higuchi and Hiroshi Inoue

    The 7th International Conference on Advanced Capacitors (ICAC2023)  2023.09  電気化学会キャパシタ技術委員会

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    Presentation type：Poster presentation  

    Venue：鎌倉  

  • Zinc Deposition Behavior in Starch and Highly Concentrated Potassium Hydroxide Aqueous Solutions International conference

    Cheng Zhen, Naoki Hiratsuka, Masanobu Chiku, Eiji Higuchi, Takashi Itoh, Hiroshi Inoue

    International Symposium of the Graduate School of Engineering, Osaka Metropolitan University  2023.09  大阪公立大学大学院工学研究科

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    Presentation type：Poster presentation  

    Venue：大阪  

  • Analysis of Electrochemical Glycerol Oxidation Reaction Mechanism on Ag-modified Pt Electrodes in Alkaline Medium International conference

    Takuya Hamada, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    International Symposium of the Graduate School of Engineering, Osaka Metropolitan University  2023.09  大阪公立大学大学院工学研究科

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    Presentation type：Poster presentation  

    Venue：大阪  

  • アルカリ水溶液中でのAg修飾Pt電極上における電気化学的グリセリン酸化反応のメカニズム解析 Domestic conference

    濱田拓哉，知久昌信，樋口栄次，井上博史

    電気化学会2023電気化学秋季大会  2023.09  電気化学会

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    Presentation type：Oral presentation (general)  

    Venue：福岡  

  • Preparation and Characterization of Platinum-Loaded Conductive Titanium Oxide Catalysts for Oxygen Reduction Reaction International conference

    Yujang Li, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    The 9th Joint Symposium on Advanced Materials and Applications (JSAMA-9)  2023.09 

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    Presentation type：Poster presentation  

    Venue：姫路  

  • 酸化ルテニウムカソードのアルカリ水溶液中での耐久性 Domestic conference

    樋口栄次、外山夏海、知久昌信、井上博史

    電気化学会電解科学技術委員会第32回電極材料研究会  2023.07  電気化学会電解科学技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：横浜  

  • フッ化物を用いたコンバージョン反応によるアルミニウム二次電池用正極材料の開発 Domestic conference

    知久昌信・吉谷真希・國澤剛志・樋口栄次・井上博史

    電気化学会第90回大会  2023.03  電気化学会

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    Presentation type：Oral presentation (general)  

    Venue：仙台  

  • Zinc Deposition Behavior in Highly Concentrated Potassium Hydroxide Aqueous Solutions International conference

    Cheng Zhen, Naoki Hiratsuka, Masanobu Chiku, Eiji Higuchi, Hiroshi Inoue

    ACEPS (Asian Conference on Electrochemical Power Sources 11)  2022.12  ACEPS (Asian Conference on Electrochemical Power Sources 11)

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    Presentation type：Poster presentation  

    Venue：Singapore  

  • メカノケミカル法を用いた高導電性チタン酸化物の常温常圧合成 Domestic conference

    清水祐太，知久昌信，樋口栄次，井上博史

    2022年度電気化学会関西支部第3回関西電気化学研究会  2022.12  電気化学会関西支部

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    Presentation type：Poster presentation  

    Venue：オンライン  

  • 高導電性チタン酸化物の常温常圧合成と物性評価 Domestic conference

    清水祐太，知久昌信，樋口栄次，井上博史

    2022年度大阪公立大学全固体電池実用化研究会 第 2 回セミナー  2022.12  大阪公立大学全固体電池実用化研究会

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    Presentation type：Poster presentation  

    Venue：大阪  

  • アルカリ水電解の起動停止サイクルに伴う金属酸化物カソードの耐久性 Domestic conference

    樋口栄次，外山夏海，知久昌信，井上博史

    第46回電解技術討論会  2022.11  電気化学会電解科学技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：大分  

  • 全固体亜鉛負極電池用新規高分子ヒドロゲル電解質の開発 Domestic conference

    田畑宥樹，知久昌信，樋口栄次，井上博史

    第63回電池討論会  2022.11  電気化学会電池技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：福岡  

  • 高導電性チタン酸化物の常温常圧合成 Domestic conference

    清水祐太，知久昌信，樋口栄次，井上博史

    第12回CSJ化学フェスタ2022  2022.10  日本化学会

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    Presentation type：Poster presentation  

    Venue：船橋  

  • アルカリ水電解用金属酸化物カソードの耐久性に及ぼす中間層の影響 Invited Domestic conference

    樋口栄次，外山夏海，知久昌信，井上博史

    電気化学会電解科学技術委員会第33回電解プロセス研究会及び第117回委員会  2022.09  電気化学会電解科学技術委員会

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    Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Venue：立命館大学東京キャンパス  

  • アルカリ水電解用金属酸化物カソードの耐久性に及ぼす中間層の影響 Domestic conference

    樋口栄次，外山夏海，知久昌信，井上博史

    2022年電気化学秋季大会  2022.09  電気化学会

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    Presentation type：Oral presentation (general)  

    Venue：神奈川大学  

  • アルカリ水電解における金属酸化物カソードの活性および耐久性の評価 Domestic conference

    樋口栄次，外山夏海，知久昌信，井上博史

    電気化学会電解科学技術委員会第31回電極材料研究会  2022.08  電気化学会電解科学技術委員会

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    Presentation type：Oral presentation (general)  

    Venue：オンライン  

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Industrial Property Rights

  • コアシェル粒子の製造方法

    井上博史, 樋口栄次

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    property_type：Patent 

    Patent/Registration no：5436059 

  • 白金粒子担持カーボンブラック触媒の製造方法

    井上博史, 樋口栄次

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    property_type：Patent 

    Patent/Registration no：5436059 

  • 全固体アルカリ二次電池用無機ヒドロゲル電解質とその製法及び全固体アルカリ二次電池

    井上博史, 野原愼士

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    property_type：Patent 

    Patent/Registration no：5021940 

Outline of collaborative research (seeds)

  • Development of highly active anode catalysts for use in direct alcohol fuel cells

  • Development of non-precious metal cathode catalysts for hydrogen evloution reaction in water electrolysis

  • Development of cathode catalysts for use in polymer electrolyte fuel cells

  • Development of hydrogel electrolytes for realization of all-solid-state alkaline rechargeable batteries

  • Development of hydrgeon storage materials as the negative electrode active mateirla for use in nickel-hydrogen rechargeable battery

Grant-in-Aid for Scientific Research

  • 新規非貴金属電極触媒としての高導電性酸化物の創製

    Grant-in-Aid for Scientific Research(B)  2028

  • 新規非貴金属電極触媒としての高導電性酸化物の創製

    Grant-in-Aid for Scientific Research(B)  2027

  • 新規非貴金属電極触媒としての高導電性酸化物の創製

    Grant-in-Aid for Scientific Research(B)  2026

  • 新規非貴金属電極触媒としての高導電性酸化物の創製

    Grant-in-Aid for Scientific Research(B)  2025

Contract research

  • 常温水電解の実用化基盤研究プラットフォームの構築

    国立研究開発法人新エネルギー・産業技術総合開発機構  水素社会実現に向けた革新的燃料電池技術等の活用のための技術開発事業／燃料電池等利用の飛躍的拡大に向けた共通課題解決型産学官連携研究開発事業／水素利用等高度化先端技術開発  2024

  • 亜鉛負極電池の研究開発

    国立研究開発法人新エネルギー・産業技術総合開発機構  電気自動車用革新型蓄電池開発事業  2024

  • 亜鉛負極電池の研究開発

    国立研究開発法人　新エネルギー・産業技術総合開発機構（NEDO)  電気自動車用革新型蓄電池開発  2023

  • 常温水電解の実用化基盤研究プラットフォームの構築

    国立研究開発法人　新エネルギー・産業技術総合開発機構（NEDO)  水素社会実現に向けた革新的燃料電池技術等の開発のための技術開発事業  2023

  • 水素利用等先導研究開発事業/水電解水素製造技術高度化のための基盤技術研究開発/アルカリ水電解及び固体高分子形水電解の高度化

    国立研究開発法人　新エネルギー・産業技術総合開発機構（NEDO)  水素利用等先導研究開発事業  2022

  • 亜鉛負極電池の研究開発

    国立研究開発法人　新エネルギー・産業技術総合開発機構（NEDO)  電気自動車用革新型蓄電池開発  2022

  • 亜鉛負極電池の研究開発

    国立研究開発法人　新エネルギー・産業技術総合開発機構（NEDO)  2021

  • 水素利用等先導研究開発事業/水電解水素製造技術高度化のための基盤技術研究開発/アルカリ水電解及び固体高分子形水電解の高度化

    国立研究開発法人　新エネルギー・産業技術総合開発機構（NEDO)  2021

  • 水素利用等先導研究開発事業/水電解水素製造技術高度化のための基盤技術研究開発/アルカリ水電解及び固体高分子形水電解の高度化

    国立研究開発法人　新エネルギー・産業技術総合開発機構（NEDO)  2020

  • 水素利用等先導研究開発事業/水電解水素製造技術高度化のための基盤技術研究開発/アルカリ水電解及び固体高分子形水電解の高度化

    国立研究開発法人新エネルギー・産業技術総合開発機構（NEDO)  2019

  • アルカリ水電解及び固体高分子形水電解の高度化

    国立研究開発法人新エネルギー・産業技術総合開発機構  2018

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Acceptance of Researcher

  • 2024  Number of researchers：2

  • 2023  Number of researchers：1

  • 2022  Number of researchers：1

Charge of on-campus class subject

  • 物理化学1A

    2024   Weekly class   Undergraduate

  • 応用化学実験2

    2024   Weekly class   Undergraduate

  • 応用化学概論

    2024   Weekly class   Undergraduate

  • 物質化学生命系特別研究第1

    2024   Intensive lecture   Graduate school

  • 物質化学生命系特別演習第1

    2024   Intensive lecture   Graduate school

  • 物質化学生命系特別演習

    2024   Intensive lecture   Graduate school

  • 応用化学実験III

    2024   Intensive lecture   Undergraduate

  • 基礎無機・物理化学

    2024   Weekly class   Graduate school

  • 電気化学A

    2024   Weekly class   Undergraduate

  • 応用化学総合演習

    2024   Weekly class   Undergraduate

  • 応用化学実験3

    2024   Weekly class   Undergraduate

  • 応用化学実験1

    2024   Weekly class   Undergraduate

  • 応用化学特論3

    2024   Weekly class   Graduate school

  • 電気化学特論

    2024   Weekly class   Graduate school

  • 物質化学生命系特別研究第2

    2024   Intensive lecture   Graduate school

  • 物質化学生命系特別演習第2

    2024   Intensive lecture   Graduate school

  • 物質化学生命系特別研究

    2024   Intensive lecture   Graduate school

  • 応用化学実験V

    2024   Weekly class   Undergraduate

  • 応用化学実験IV

    2024   Weekly class   Undergraduate

  • 応用化学実験II

    2024   Intensive lecture   Undergraduate

  • 物理化学1A

    2023   Weekly class   Undergraduate

  • 応用化学概論

    2023   Weekly class   Undergraduate

  • 物質化学生命系特別研究第1

    2023   Intensive lecture   Graduate school

  • 物質化学生命系特別演習第1

    2023   Intensive lecture   Graduate school

  • 応用化学実験III

    2023   Weekly class   Undergraduate

  • 基礎無機・物理化学

    2023   Weekly class   Graduate school

  • 物質化学生命系特別演習

    2023   Intensive lecture   Graduate school

  • 物質化学生命系特別研究

    2023   Intensive lecture   Graduate school

  • 応用化学実験V

    2023   Weekly class   Undergraduate

  • 応用化学実験1

    2023   Weekly class   Undergraduate

  • 応用化学実験IV

    2023   Weekly class   Undergraduate

  • 応用化学実験II

    2023   Intensive lecture   Undergraduate

  • 電気化学

    2023   Weekly class   Undergraduate

  • 応用化学特論3

    2023   Weekly class   Graduate school

  • 電気化学特論

    2023   Weekly class   Graduate school

  • 物質化学生命系特別研究第2

    2023   Intensive lecture   Graduate school

  • 物質化学生命系特別演習第2

    2023   Intensive lecture   Graduate school

  • 物質化学生命系特別演習第1

    2022   Intensive lecture   Graduate school

  • 物理化学IIA

    2022   Weekly class   Undergraduate

  • 応用化学実験I

    2022   Weekly class   Undergraduate

  • 応用化学実験III

    2022   Weekly class   Undergraduate

  • 基礎無機・物理化学

    2022   Weekly class   Undergraduate

  • 物質化学生命系特別演習

    2022   Intensive lecture   Graduate school

  • 物質化学生命系特別演習第2 （応用化学分野）

    2022   Intensive lecture   Graduate school

  • 応用化学特論3 （応用化学分野）

    2022   Weekly class   Graduate school

  • 電気化学特論 （応用化学分野）

    2022   Weekly class   Graduate school

  • 応用化学実験II

    2022   Weekly class   Undergraduate

  • 応用化学実験IV

    2022   Weekly class   Undergraduate

  • 応用化学実験V

    2022   Weekly class   Undergraduate

  • 電気化学

    2022   Weekly class   Undergraduate

  • 物質化学生命系特別研究 （応用化学分野）

    2022   Intensive lecture   Graduate school

  • 物質化学生命系特別研究第2（応用化学分野）

    2022   Intensive lecture   Graduate school

  • 物質化学生命系特別研究第1（応用化学分野）

    2022   Intensive lecture   Graduate school

  • Advanced Applied Chemistry III

    2021    

  • Selected Topics in Electrochemistry

    2021    

  • Advanced Electrochemistry

    2021    

  • Physical Chemistry IIA

    2021    

  • Principles of Inorganic and Physical Chemistry A

    2021    

  • Electrochemistry

    2021   Weekly class   Undergraduate

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Number of papers published by graduate students

  • 2024

    Number of undergraduate student / college student presentations：0  Number of graduate students presentations：3

  • 2023

    Number of undergraduate student / college student presentations：0  Number of graduate students presentations：4

  • 2022

    Number of undergraduate student / college student presentations：0  Number of graduate students presentations：2

Number of instructed thesis, researches

  • 2024

    Number of instructed the graduation thesis：7  Number of graduation thesis reviews：7

    [Number of instructed the Master's Program] (previous term)：15  [Number of instructed the Master's Program] (letter term)：3

    [Number of master's thesis reviews] (chief)：6  [Number of master's thesis reviews] (vice-chief)：10

    [Number of doctoral thesis reviews] (chief)：2  [Number of doctoral thesis reviews] (vice-chief)：1

  • 2023

    Number of instructed the graduation thesis：7  Number of graduation thesis reviews：7

    [Number of instructed the Master's Program] (previous term)：13  [Number of instructed the Master's Program] (letter term)：2

    [Number of master's thesis reviews] (chief)：5  [Number of master's thesis reviews] (vice-chief)：11

    [Number of doctoral thesis reviews] (chief)：0  [Number of doctoral thesis reviews] (vice-chief)：0

  • 2022

    Number of instructed the graduation thesis：7  Number of graduation thesis reviews：7

    [Number of instructed the Master's Program] (previous term)：11  [Number of instructed the Master's Program] (letter term)：2

    [Number of master's thesis reviews] (chief)：5  [Number of master's thesis reviews] (vice-chief)：8

    [Number of doctoral thesis reviews] (chief)：0  [Number of doctoral thesis reviews] (vice-chief)：0

Social Activities　⇒ Link to the list of Social Activities

  • 大阪府高齢者大学校火曜日講座「13. 人生100年時代のサイエンス科」「水素」～作る、貯める、運ぶ、使う～

    Role(s)： Lecturer

    Type： Visiting lecture

    認定NPO法人　大阪府高齢者大学校  火曜日講座「13. 人生100年時代のサイエンス科」  2025.12

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    SDGs：

    Number of participants：45（人）

  • 藤井寺市公民館短期講座 新エネルギー「水素」について～作る、貯める、運ぶ、使う～

    2020.04 - 2021.03

  • シニア自然大学校 水素～作る、貯める、運ぶ、使う～

    2020.04 - 2021.03

  • 教員免許状更新講習 現代社会と物質・化学

    2019.04 - 2020.03

  • 府大講座 水素エネルギー－つくる、たくわえる、つかう－

    2005.04 - 2006.03

Visiting Lectures　⇒ Link to the list of Visiting Lectures

  • 水素（作る・貯める・運ぶ・使う）

    Category：Modern system science (knowledge information system, environmental system, educational welfare, psychology),　Science (mathematics, physics, chemistry, biology, geology, biochemistry),　Engineering (machinery, electronics / physics, electrical / electronics, electrical information, chemical biotechnology, architecture, cities (civil engineering / environment), material chemistry, aerospace, marine systems, applied chemistry, chemistry, materials)

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    Audience：High school students,　College students,　Teachers,　Researchers,　General,　Civic organization

    Keyword：水素、クリーンエネルギー、CO2削減 

    二酸化炭素を排出しないクリーンなエネルギー源である「水素」について、「作る・貯める・運ぶ・使う」という観点からわかりやすく解説する。

  • 電気で浮かび上がる絵

    Category：Science (mathematics, physics, chemistry, biology, geology, biochemistry),　Engineering (machinery, electronics / physics, electrical / electronics, electrical information, chemical biotechnology, architecture, cities (civil engineering / environment), material chemistry, aerospace, marine systems, applied chemistry, chemistry, materials)

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    Audience：Preschooler,　Schoolchildren,　Junior high school students,　High school students,　Teachers,　Researchers,　Civic organization

    Keyword：着色、電気分解、ヨウ素デンプン反応 

    ヨウ化物イオンとデンプンを含むヒドロゲル電解質に電極を突き刺し、両極間に電圧を印加すると、一瞬で電極は青紫色に着色し、電極の形が青く浮かび上がる。

  • 燃料電池と触媒

    Category：Modern system science (knowledge information system, environmental system, educational welfare, psychology),　Engineering (machinery, electronics / physics, electrical / electronics, electrical information, chemical biotechnology, architecture, cities (civil engineering / environment), material chemistry, aerospace, marine systems, applied chemistry, chemistry, materials)

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    Audience：High school students,　College students,　Teachers,　Researchers,　General,　Company,　Civic organization

    Keyword：燃料電池、固体高分子形燃料電池、直接形エタノール燃料電池、電極触媒 

    家庭用や自動車用に検討されている固体高分子形燃料電池の正極（酸素極）用電極触媒の低白金化やポータブル機器用に検討されている直接形アルコール燃料電池のうちエタノールを燃料とする燃料電池用触媒の開発について

Foreigner acceptance

  • 2024

    foreigners accepted :1

    International Students :4

  • 2023

    foreigners accepted :1

    International Students :5

  • 2022

    foreigners accepted :1

    International Students :3

Job title

  • Job title within the department

    School of Engineering Department of Applied Chemistry 

    学科長  2022.04 - 2024.03

Other

  • 研究職歴

    2022.04 - Now

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    大阪公立大学大学院工学研究科教授