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Tailoring of highly active amorphous oxide electrodes derived from anodizing of iron-base alloys

Research Project

Project/Area Number 19H02469
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionHokkaido University

Principal Investigator

Habazaki Hiroki  北海道大学, 工学研究院, 教授 (50208568)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Keywordsアルカリ水分解 / 酸素発生反応 / 電極触媒 / アノード酸化 / 多孔質膜 / 電極 / 酸素発生 / 水電解 / アモルファス
Outline of Research at the Start

本研究では,(Fe,Co,Ni)系合金のアノード酸化により,ナノ形態を制御した多孔質アモルファス酸化膜を作製し,アルカリ水電解用高活性かつ高耐久性の酸素発生電極の創製を行なう。さらに,多孔質酸化物の還元処理によるナノ形態制御多孔質金属の作製にも挑戦し,高活性水素発生電極の簡便な作製法の確立も目指す。

Outline of Final Research Achievements

Highly efficient hydrogen production by alkaline water electrolysis is an important process for achieving carbon neutrality. In this study, we found that the overpotential of the oxygen evolution reaction in KOH solution can be significantly reduced by simple anodic oxidation of commercially available FeNiCo and FeNi alloys, and that the electrode has excellent durability. It was also found that the porous fluoride layer formed by anodic oxidation is an excellent precursor that is quickly converted to highly active oxyhydroxides in KOH.

Academic Significance and Societal Importance of the Research Achievements

アルカリ水電解は最も低コストなグリーン水素製造法であるが,更なる高効率化が求められている。本研究では,過電圧の大きな酸素発生反応に関して,活性が低い汎用FeNiCo合金がその表面にフッ化物含有有機電解液中におけるアノード酸化によって生成する多孔質筆禍物層が前駆体となり,KOH水溶液中において活性層が生成し,過電圧が大幅に低減するという,学術的にも社会的にも意義のある結果が得られたと判断している。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (15 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (12 results) (of which Int'l Joint Research: 6 results,  Invited: 4 results)

  • [Journal Article] Highly Active and Durable FeNiCo Oxyhydroxide Oxygen Evolution Reaction Electrocatalysts Derived from Fluoride Precursors2021

    • Author(s)
      Nishimoto Masahiro、Kitano Sho、Kowalski Damian、Aoki Yoshitaka、Habazaki Hiroki
    • Journal Title

      ACS Sustainable Chemistry & Engineering

      Volume: 9 Issue: 28 Pages: 9465-9473

    • DOI

      10.1021/acssuschemeng.1c03116

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In Situ Activation of Anodized Ni-Fe Alloys for the Oxygen Evolution Reaction In Alkaline Media2020

    • Author(s)
      Yamada Naohito、Kitano Sho、Yato Yuya、Kowalski Damian、Aoki Yoshitaka、Habazaki Hiroki
    • Journal Title

      ACS Applied Energy Materials

      Volume: 3 Issue: 12 Pages: 12316-12326

    • DOI

      10.1021/acsaem.0c02362

    • NAID

      120007181809

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Compositional Variations in Anodic Nanotubes/Nanopores Formed on Fe 100, 110 and 111 Single Crystals2020

    • Author(s)
      Fadillah Laras、Kowalski Damian、Aoki Yoshitaka、Habazaki Hiroki
    • Journal Title

      Electrochimica Acta

      Volume: 364 Pages: 137316-137316

    • DOI

      10.1016/j.electacta.2020.137316

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Niのアノード酸化による水素発生反応および酸素発生反応の活性化2022

    • Author(s)
      矢藤雄也,北野翔,青木芳尚, 幅崎浩樹
    • Organizer
      化学系学協会北海道支部2022年冬季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 鉄系合金のアノード酸化によるアルカリ水電解用電極の高活性化2022

    • Author(s)
      幅崎浩樹,西本政弘,山田直史,北野翔,青木芳尚
    • Organizer
      表面技術協会第 145 回講演大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Highly Active OER Electrodes Derived from Fe-Doped Ni Oxyfluoride Formed by Anodizing of NiFe Electrodeposits2021

    • Author(s)
      H. Habazaki, N. Yamada, Y. Yato, D. Kowalski, S. Kitano, Y. Aoki
    • Organizer
      239th ECS Meeting with the 18th International Meeting on Chemical Sensors (IMCS)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Fabrication of Highly Active OER Electrocatalysts from Nanoporous Fluoride Precursors Formed by Anodizing2021

    • Author(s)
      H. Habazaki, M. Nishimoto, N. Yamada, D. Kowalski, S. Kitano, Y. Aoki
    • Organizer
      72nd Annual Meeting of the International Society of Electrochemistry
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FeNiCo合金のアノード酸化によるアルカリ水電解用高活性電極触媒の作製と活性化機構2021

    • Author(s)
      西本 政弘,北野 翔,青木 芳尚,幅崎 浩樹
    • Organizer
      ARS2021研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Fe-Ni-Co合金のアノード酸化によるアルカリ水電解用高活性アノードの作製2021

    • Author(s)
      西本 政弘、コヴアルスキー ダミアン、北野 翔、青木 芳尚、幅崎 浩樹
    • Organizer
      電気化学会第88回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] FeNiCo 合金 の アノード酸化による 酸素発生反応の 高活性化2021

    • Author(s)
      西本政弘、Damian Kowalski、北野 翔、青木 芳尚、幅崎 浩樹
    • Organizer
      化学系学協会北海道支部2021年冬季研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Compositional Variations in Porous Anodic Oxides Formed on Fe(100), Fe(110) and Fe(111) Single Crystals2020

    • Author(s)
      D. Kowalski, L. Fadillah, Y. Aoki, H. Habazaki
    • Organizer
      237th ECS Meeting with the 18th International Meeting on Chemical Sensors
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Anodizing of Metals for Fabrication of Functional Nanostructured Surfaces2020

    • Author(s)
      H. Habazaki
    • Organizer
      PRIME2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Nanostructured Anodic Films on Iron: Formation Mechanism and Electrocatalytic Applications2020

    • Author(s)
      H. Habazaki
    • Organizer
      6th Ertl Symposium
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] In Situ Activation of Anodized NiFe Alloys for OER in Alkaline Media2020

    • Author(s)
      N. Yamada, D. Kowalski, Y. Yato, Y. Sato, S. Kitano, Y. Aoki, H. Habazaki
    • Organizer
      ISE 71st Annual Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ni-Fe-Co系合金の陽極酸化による水電解用酸素発生電極の高活性化2020

    • Author(s)
      西本政弘,朱春宇,北野翔,コバルスキーダミアン,青木芳尚,幅崎浩樹
    • Organizer
      化学系学協会北海道支部2020年冬季研究発表会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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