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High Entropy Alloy (HEA) Catalysts and of Super HEA Nanoparticles by Multivariate Analysis

Research Project

Project/Area Number 21H01762
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 28030:Nanomaterials-related
Research InstitutionKyoto University

Principal Investigator

Kusada Kohei  京都大学, 白眉センター, 特定准教授 (50741857)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2022: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2021: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywordsハイエントロピー / 合金 / ナノ粒子 / 触媒 / ナノ合金 / 多元素 / インフォマティクス / 多元素ナノ合金 / 貴金属
Outline of Research at the Start

本提案では、多変量解析を用いた効率的な材料探索手法を基軸として、5元素以上が等モル比程度で混合した新しい合金種であるハイエントロピー合金(High-entropy alloy: HEA)ナノ粒子の革新的触媒開発に挑戦する。さらに、前人未到の20種類以上の元素が原子レベルで混ざりあった超ハイエントロピー合金(Ultra HEA: UHEA)ナノ粒子の実現を目指す。本研究開発により、高活性と高耐久性を有した触媒の開発や、従来のナノ合金では達成されなかった複雑な反応ステップを介する高難度反応を促進する触媒開発が行えると期待される。

Outline of Final Research Achievements

In this proposal, we challenged the development of innovative catalysts for high-entropy alloy (HEA) nanoparticles, a new type of alloy consisting of five or more elements in equal molar proportions, based on an efficient material search method using multivariate analysis. Furthermore, we aimed to realize ultra-high-entropy alloy (UHEA) nanoparticles with an unprecedented mixture of more than 20 elements at the atomic level. As a result of the research, it was found that, as initially hypothesized, efficient optimization of HEA catalysts was achieved through machine learning. While synthesis of 20-element HEAs was not achieved, synthesis of UHEA consisting of a world-record 15 elements was successful.

Academic Significance and Societal Importance of the Research Achievements

本研究開発により、高活性と高耐久性を有した触媒の開発や、従来のナノ合金では達成されなかった複雑な反応ステップを介する高難度反応を促進する触媒開発が行えると期待される。本研究目標が達成されることで、多元素が混合した際に発現される相互作用の理解が進むと共に、これまで以上に自在に元素を用いて新物質開発が行えるようになり、既存物質では達成されていない高難度反応に向けた高性能触媒などの開発のきっかけになると考えられる。

Report

(4 results)
  • 2024 Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (41 results)

All 2025 2024 2023 2022 2021

All Journal Article (17 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 17 results,  Open Access: 4 results) Presentation (24 results) (of which Int'l Joint Research: 7 results,  Invited: 21 results)

  • [Journal Article] Phase Control in Monometallic and Alloy Nanomaterials2025

    • Author(s)
      Kusada Kohei、Kitagawa Hiroshi
    • Journal Title

      Chemical Reviews

      Volume: 125 Issue: 2 Pages: 599-659

    • DOI

      10.1021/acs.chemrev.4c00368

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] All Iron‐Group and Platinum‐Group Elements Metal High‐Entropy Alloy Nanoparticles2025

    • Author(s)
      Mahin Julien、Kusada Kohei、Yamamoto Tomokazu、Toriyama Takaaki、Murakami Yasukazu、Sakata Osami、Kawaguchi Shogo、Ashitani Hirotaka、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      Angewandte Chemie International Edition

      Volume: in press Issue: 31

    • DOI

      10.1002/anie.202502552

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Platinum‐Group Metal High‐Entropy Selenides for the Hydrogen Evolution Reaction2024

    • Author(s)
      Deng Xiaohui、Kusada Kohei、Yamamoto Tomokazu、Toriyama Takaaki、Murakami Yasukazu、Tseng Jo‐Chi、Yamada Hiroki、Sakata Osami、Ashitani Hirotaka、Kawaguchi Shogo、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 64 Issue: 2

    • DOI

      10.1002/anie.202414786

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Continuous-Flow Chemical Synthesis for Sub-2 nm Ultra-Multielement Alloy Nanoparticles Consisting of Group IV to XV Elements2023

    • Author(s)
      Minamihara Hiroki、Kusada Kohei、Yamamoto Tomokazu、Toriyama Takaaki、Murakami Yasukazu、Matsumura Syo、Kumara Loku Singgappulige Rosantha、Sakata Osami、Kawaguchi Shogo、Kubota Yoshiki、Seo Okkyun、Yasuno Satoshi、Kitagawa Hiroshi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 145 Issue: 31 Pages: 17136-17142

    • DOI

      10.1021/jacs.3c03713

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molybdenum-Ruthenium-Carbon Solid-Solution Alloy Nanoparticles: Can They Be Pseudo-Technetium Carbide?2023

    • Author(s)
      Okazoe Shinya、Kusada Kohei、Yoshida Yukihiro、Maesato Mitsuhiko、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Kawaguchi Shogo、Kubota Yoshiki、Nanba Yusuke、Aspera Susan Me?ez、Koyama Michihisa、Kitagawa Hiroshi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 145 Issue: 44 Pages: 24005-24011

    • DOI

      10.1021/jacs.3c06594

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Denary High-Entropy Oxide Nanoparticles Synthesized by a Continuous Supercritical Hydrothermal Flow Process2023

    • Author(s)
      Hanabata Shota、Kusada Kohei、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Kawaguchi Shogo、Kubota Yoshiki、Nishida Yoshihide、Haneda Masaaki、Kitagawa Hiroshi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 146 Issue: 1 Pages: 181-186

    • DOI

      10.1021/jacs.3c07351

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Compositional dependence of structures and hydrogen evolution reaction activity of platinum-group-metal quinary RuRhPdIrPt alloy nanoparticles2022

    • Author(s)
      Maruta Yuto、Kusada Kohei、Wu Dongshuang、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Seo Okkyun、Yasuno Satoshi、Kawaguchi Shogo、Sakata Osami、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      Chemical Communications

      Volume: 58 Issue: 44 Pages: 6421-6424

    • DOI

      10.1039/d2cc01866g

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Effect of Ru Precursor and Support on the Hydrogenation of Aromatic Aldehydes/Ketones to Alcohols2022

    • Author(s)
      Chaudhari Chandan、Sato Katsutoshi、Miyahara Shin‐ichiro、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Kusuda Kohei、Kitagawa Hiroshi、Nagaoka Katsutoshi
    • Journal Title

      ChemCatChem

      Volume: 14 Issue: 16

    • DOI

      10.1002/cctc.202200241

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Continuous-Flow Reactor Synthesis for Homogeneous 1 nm-Sized Extremely Small High-Entropy Alloy Nanoparticles2022

    • Author(s)
      Minamihara Hiroki、Kusada Kohei、Wu Dongshuang、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Kumara Loku Singgapulige Rosantha、Ohara Koji、Sakata Osami、Kawaguchi Shogo、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 144 Issue: 26 Pages: 11525-11529

    • DOI

      10.1021/jacs.2c02755

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemical Synthesis, Characterization, and Properties of Multi-Element Nanoparticles2022

    • Author(s)
      Kusada Kohei, Mukoyoshi Megumi, Wu Dongshuang, Kitagawa Hiroshi
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 61 Issue: 48

    • DOI

      10.1002/anie.202209616

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Continuous-flow syntheses of alloy nanoparticles2022

    • Author(s)
      Kusada Kohei、Kitagawa Hiroshi
    • Journal Title

      Materials Horizons

      Volume: 9 Issue: 2 Pages: 547-558

    • DOI

      10.1039/d1mh01413g

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Noble-Metal High-Entropy-Alloy Nanoparticles: Atomic-Level Insight into the Electronic Structure2022

    • Author(s)
      Wu Dongshuang、Kusada Kohei、Nanba Yusuke、Koyama Michihisa、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Seo Okkyun、Gueye Ibrahima、Kim Jaemyung、Rosantha Kumara Loku Singgapulige、Sakata Osami、Kawaguchi Shogo、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 144 Issue: 8 Pages: 3365-3369

    • DOI

      10.1021/jacs.1c13616

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Crystal Structure Control of Binary and Ternary Solid-Solution Alloy Nanoparticles with a Face-Centered Cubic or Hexagonal Close-Packed Phase2022

    • Author(s)
      Zhang Quan、Kusada Kohei、Wu Dongshuang、Yamamoto Tomokazu、Toriyama Takaaki、Matsumura Syo、Kawaguchi Shogo、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 144 Issue: 9 Pages: 4224-4232

    • DOI

      10.1021/jacs.2c00583

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigation of Local Structure and Enhanced Thermal Stability of Ir-Doped PdRu Nanoparticles for Three-Way Catalytic Applications2021

    • Author(s)
      Tayal Akhil、Seo Okkyun、Kim Jaemyung、Kusada Kohei、Kitagawa Hiroshi、Sakata Osami
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 125 Issue: 37 Pages: 20583-20591

    • DOI

      10.1021/acs.jpcc.1c05929

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Total x-ray scattering setup for crystalline particles at SPring-8 BL15XU NIMS beamline2021

    • Author(s)
      Seo Okkyun、Kumara L. S. R.、Kim Jaemyung、Hiroi Satoshi、Kusada Kohei、Kitagawa Hiroshi、Sakata Osami
    • Journal Title

      Review of Scientific Instruments

      Volume: 92 Issue: 11 Pages: 113905-113905

    • DOI

      10.1063/5.0067938

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Phase Control of Solid-Solution Nanoparticles beyond the Phase Diagram for Enhanced Catalytic Properties2021

    • Author(s)
      Wu Dongshuang、Kusada Kohei、Aspera Susan Me?ez、Nakanishi Hiroshi、Chen Yanna、Seo Okkyun、Song Chulho、Kim Jaemyung、Hiroi Satoshi、Sakata Osami、Yamamoto Tomokazu、Matsumura Syo、Nanba Yusuke、Koyama Michihisa、Ogiwara Naoki、Kawaguchi Shogo、Kubota Yoshiki、Kitagawa Hiroshi
    • Journal Title

      ACS Materials Au

      Volume: 2 Issue: 2 Pages: 110-116

    • DOI

      10.1021/acsmaterialsau.1c00048

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantitative Characterization of the Thermally Driven Alloying State in Ternary Ir?Pd?Ru Nanoparticles2021

    • Author(s)
      Tran Xuan Quy、Aso Kohei、Yamamoto Tomokazu、Yang Wenhui、Kono Yoshiki、Kusada Kohei、Wu Dongshuang、Kitagawa Hiroshi、Matsumura Syo
    • Journal Title

      ACS Nano

      Volume: 16 Issue: 1 Pages: 1612-1624

    • DOI

      10.1021/acsnano.1c10414

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Phase Controlled Metal Nanoparticles and their Catalytic Applications2025

    • Author(s)
      Kohei Kusada
    • Organizer
      18th Japan-Taiwan Joint Symposium on Catalysis
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Chemical Synthesis of High-Entropy Nanomaterials and their Catalytic Properties2025

    • Author(s)
      草田康平
    • Organizer
      The 25th Workshop on Fine Particle Plasmas
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 多元素ナノ物質開発と触媒への応用2025

    • Author(s)
      草田康平
    • Organizer
      日本化学会第105春季年会 CIP招待講演
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Precise Control of Three-Dimensional Atomic Arrangement in Metal Nanoparticles2024

    • Author(s)
      Kohei Kusada
    • Organizer
      25th iCeMS International Symposium, Self-Assembly Science for Unlocking Life's Secrets
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Chemical Synthesis of High-Entropy Nanomaterials and their Catalytic Applications2024

    • Author(s)
      Kohei Kusada
    • Organizer
      The 13th Natural Gas Conversion Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Flow Synthesis of High-Entropy Alloy and Oxide Nanoparticles and their Catalytic Properties2024

    • Author(s)
      Kohei Kusada
    • Organizer
      The 18th International Congress on Catalysis
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 多元素ナノ物質開発とその触媒応用2024

    • Author(s)
      草田康平
    • Organizer
      日物性研究所短期研究会「新物質開発・システム創成研究の最前線:分子・クラスターがもたらす物性と機能」
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 多元素ナノ物質開発と触媒応用~ビーカーからハイスループット合成への発展~2024

    • Author(s)
      草田康平
    • Organizer
      JST-CREST「未踏探索空間における革新的物質の開発」〜インフォマティクスの実践的材料応用〜公開シンポジウム
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 多元素ナノ材料開発と触媒への応用2023

    • Author(s)
      草田康平
    • Organizer
      日本磁気学会 第243回研究会/第72回化合物新磁性専門研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 非平衡合成による多元素ナノ物質の開発と触媒への応用2023

    • Author(s)
      草田康平
    • Organizer
      第61回オーロラセミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 非平衡化学合成による新規ナノ材料の開拓2023

    • Author(s)
      草田康平
    • Organizer
      日本物理学会第78回年次大会(2023年) 領域9,領域4,領域10合同セッション「ナノ物質材料が拓く世界」招待講演
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 非平衡合成によるハイエントロピー合金ナノ粒子の開発と触媒応用2023

    • Author(s)
      草田康平
    • Organizer
      日本金属学会2023年秋期講演(第173回)大会 S3 ハイエントロピー合金の材料科学(X)基調講演
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 多元素ナノ物質開発と触媒への応用2023

    • Author(s)
      草田康平
    • Organizer
      名城大学理工談話会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 新規ナノ物質合成手法の開発と触媒への応用2023

    • Author(s)
      草田康平
    • Organizer
      第63回 データ駆動型AIセミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] What Happens When We Mix Many Elements within a Nanoparticle?2023

    • Author(s)
      Kohei Kusada
    • Organizer
      VISTEC-Kyoto University Joint Symposium: Recent Advances in Chemistry and Smart Materials
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 原子の三次元自在配列による新規金属ナノ物質の開発2023

    • Author(s)
      草田康平
    • Organizer
      日本化学会第103春季年会(2023)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Nonequilibrium Flow-Synthesis of Immiscible Binary and High-Entropy Alloy Nanoparticles and Investigation of their Catalytic Properties and Electronic Structures2022

    • Author(s)
      Kohei Kusada, D. Wu, T. Yamamoto, T. Toriyama, S. Matsumura, Y. Nanba, M. Koyama, O. Seo, O. Sakata, H. Kitagawa
    • Organizer
      MRS Fall Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非平衡合成を用いた多元素固溶化と相制御による機能性金属ナノ粒子の開発2022

    • Author(s)
      草田康平
    • Organizer
      ナノマテリアルジョイントミーティング 2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Non-equilibrium Synthesis for New Alloy Nanoparticles Showing High Water Splitting Catalytic Activities2022

    • Author(s)
      Kohei Kusada
    • Organizer
      第72回錯体討論会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] ハイエントロピーナノ合金触媒開発と放射光による結晶構造・電子状態解析2021

    • Author(s)
      草田康平
    • Organizer
      第35回日本放射光学会年会放射光科学合同シンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 非平衡合成による新規ナノ合金触媒の開発2021

    • Author(s)
      草田康平
    • Organizer
      第8回元素戦略に基づいた触媒設計シンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 非平衡合成による新規合金ナノ粒子の開発と電子顕微鏡による構造解析2021

    • Author(s)
      草田康平
    • Organizer
      ナノテク産業化基盤技術の有効利用および高度化と融合を目指した研究会 2022
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 非平衡合成法を用いた固溶化と相制御による機能性金属ナノ粒子の開発2021

    • Author(s)
      草田康平
    • Organizer
      日本化学会第102春季年会(2022)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 配置エントロピー効果を用いた高活性高耐久性を示す固溶ナノ合金三元触媒の開発2021

    • Author(s)
      草田 康平、Wu Dongshuang、難波優輔、古山通久、山本 知一、鳥山 誉亮、Xuan Quy Tran、松村 晶、佐藤勝俊、永岡勝俊、北川 宏
    • Organizer
      第128回触媒討論会
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2026-01-16  

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