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2021 Fiscal Year Annual Research Report

Development of ion conducting membrane and electrocatalyst based on hydroxide nanosheets for efficient enery conversion

Research Project

Project/Area Number 18H03869
Research InstitutionNational Institute for Materials Science

Principal Investigator

馬 仁志  国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, グループリーダー (90391218)

Co-Investigator(Kenkyū-buntansha) 坂井 伸行  国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 主任研究員 (70431822)
Project Period (FY) 2018-04-01 – 2022-03-31
Keywords水酸化物 / ナノシート / イオン伝導 / 電極触媒
Outline of Annual Research Achievements

独自に開発したトポケミカル手法を駆使し、層状複水酸化物(LDH)の金属組成および電荷密度を精密制御できるプロセスを開発した。Co5/6-Fe1/6やCo2/3-Ni1/6-Fe1/6など金属組成をチューニングしながら2層単元構造を有する板状結晶を合成した。続いて剥離させることによって、単層ナノシートと同じ電荷密度(1/3+)を持つが、平均厚さが約1.9 nmの2層(double-layer)ナノシートの作製に初めて成功した。単層に比べ、2層ナノシートが酸素発生反応(OER)触媒として、より優れた活性と高い反応速度を示すことを明らかにした。これにより、ナノシートの層数に依存する物理・化学特性を系統的に考察するための理想的なモデルを提供できるようになった。
さらに、6配位(Oh)と4配位(Td)共存するNi-Fe LDHナノシートを用い、静電的自己組織化過程により多種な酸化物ナノシート(RuO2.1、MnO2、還元型酸化グラフェン(rGO)等)とのヘテロ積層膜を形成した。その中で、表面にレドックス活性なLDHナノシートと下地に高導電性RuO2.1ナノシートをそれぞれ配置した2層膜が最も高いOER触媒活性を示す結果を得た。第一原理計算(DFT)とCOMSOL Multiphysicsシミュレーションを行い、表面触媒反応の電子が下地の導電性ナノシートへの効率的移動ができるヘテロ界面カプリング効果により、触媒能の向上に大きく寄与するメカニズムを解明した。
また、ナノシートから再構築した積層膜のイオン選択性はその表面電荷特性、寸法と形状に大きく影響されることを確認した。Mg-Al LDHナノシートの積層膜を長方形や三角形にカットして、イオン伝導・分離特性を評価したところ、幾何学的な制約と外部バイアス電圧を印加することにより、イオン整流効果(ダイオード特性)が得られることを実証した。

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

  • Research Products

    (17 results)

All 2022 2021

All Journal Article (11 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 10 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results)

  • [Journal Article] Molecular-Scale Manipulation of Layer Sequence in Heteroassembled Nanosheet Films toward Oxygen Evolution Electrocatalysts2022

    • Author(s)
      He Yuanqing、Jia Lulu、Lu Xueyi、Wang Chenhui、Liu Xiaohe、Chen Gen、Wu Dan、Wen Zuxin、Zhang Ning、Yamauchi Yusuke、Sasaki Takayoshi、Ma Renzhi
    • Journal Title

      ACS Nano

      Volume: 16 Pages: 4028~4040

    • DOI

      10.1021/acsnano.1c09615

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Direct Z-scheme construction of g-C3N4 quantum dots/TiO2 nanoflakes for efficient photocatalysis2022

    • Author(s)
      Xu Chengqun、Li Dezhi、Liu Xiaolu、Ma Renzhi、Sakai Nobuyuki、Yang Yuchen、Lin Shiyin、Yang Jiale、Pan Hui、Huang Janjer、Sasaki Takayoshi
    • Journal Title

      Chemical Engineering Journal

      Volume: 430 Pages: 132861~132861

    • DOI

      10.1016/j.cej.2021.132861

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Anchoring Active Sites by Pt2FeNi Alloy Nanoparticles on NiFe Layered Double Hydroxides for Efficient Electrocatalytic Oxygen Evolution Reaction2021

    • Author(s)
      Zheng Zhicheng、Guo Yanru、Wan Hao、Chen Gen、Zhang Ning、Ma Wei、Liu Xiaohe、Liang Shuquan、Ma Renzhi
    • Journal Title

      ENERGY & ENVIRONMENTAL MATERIALS

      Volume: 5 Pages: 270~277

    • DOI

      10.1002/eem2.12164

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Atomic-scale regulation of anionic and cationic migration in alkali metal batteries2021

    • Author(s)
      Xiong Pan、Zhang Fan、Zhang Xiuyun、Liu Yifan、Wu Yunyan、Wang Shijian、Safaei Javad、Sun Bing、Ma Renzhi、Liu Zongwen、Bando Yoshio、Sasaki Takayoshi、Wang Xin、Zhu Junwu、Wang Guoxiu
    • Journal Title

      Nature Communications

      Volume: 12 Pages: 1~15

    • DOI

      10.1038/s41467-021-24399-9

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] General Synthesis of Layered Rare-Earth Hydroxides (RE = Sm, Eu, Gd, Tb, Dy, Ho, Er, Y) and Direct Exfoliation into Monolayer Nanosheets with High Color Purity2021

    • Author(s)
      Bai Mingjun、Liu Xiaohe、Sakai Nobuyuki、Ebina Yasuo、Jia Lulu、Tang Daiming、Sasaki Takayoshi、Ma Renzhi
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 12 Pages: 10135~10143

    • DOI

      10.1021/acs.jpclett.1c03047

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Superlattice films of semiconducting oxide and rare-earth hydroxide nanosheets for tunable and efficient photoluminescent energy transfer2021

    • Author(s)
      Bai Mingjun、Liu Xiaohe、Sasaki Takayoshi、Ma Renzhi
    • Journal Title

      Nanoscale

      Volume: 13 Pages: 4551~4561

    • DOI

      10.1039/d0nr08824b

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photo-irradiation tunes highly active sites over β-Ni(OH)2 nanosheets for the electrocatalytic oxygen evolution reaction2021

    • Author(s)
      Liao Chengan、Xiao Ziyi、Zhang Ning、Liang Bo、Chen Gen、Wu Wei、Pan Jianglin、Liu Min、Zheng Xiang-Rong、Kang Qing、Cao Xianwu、Liu Xiaohe、Ma Renzhi
    • Journal Title

      Chemical Communications

      Volume: 57 Pages: 9060~9063

    • DOI

      10.1039/d1cc03410c

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Aqueous Formate‐Based Li‐CO2 Battery with Low Charge Overpotential and High Working Voltage2021

    • Author(s)
      Xue Hairong、Gong Hao、Lu Xueyi、Gao Bin、Wang Tao、He Jianping、Yamauchi Yusuke、Sasaki Takayoshi、Ma Renzhi
    • Journal Title

      Advanced Energy Materials

      Volume: 11 Pages: 2101630~2101630

    • DOI

      10.1002/aenm.202101630

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Controllable atomic defect engineering in layered NixFe1-x(OH)2 nanosheets for electrochemical overall water splitting2021

    • Author(s)
      Ge Jiajia、Zheng Jin You、Zhang Jiangwei、Jiang Suyu、Zhang Lili、Wan Hao、Wang Liming、Ma Wei、Zhou Zhen、Ma Renzhi
    • Journal Title

      Journal of Materials Chemistry A

      Volume: 9 Pages: 14432~14443

    • DOI

      10.1039/d1ta02188e

  • [Journal Article] Three-in-one cathode host based on Nb3O8/graphene superlattice heterostructures for high-performance Li-S batteries2021

    • Author(s)
      Wang Chenhui、Sakai Nobuyuki、Ebina Yasuo、Kikuchi Takayuki、Snowdon Monika R.、Tang Daiming、Ma Renzhi、Sasaki Takayoshi
    • Journal Title

      Journal of Materials Chemistry A

      Volume: 9 Pages: 9952~9960

    • DOI

      10.1039/d1ta01913a

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Exfoliated Ferrierite-Related Unilamellar Nanosheets in Solution and Their Use for Preparation of Mixed Zeolite Hierarchical Structures2021

    • Author(s)
      Roth Wieslaw J.、Sasaki Takayoshi、Wolski Karol、Ebina Yasuo、Tang Dai-Ming、Michiue Yuichi、Sakai Nobuyuki、Ma Renzhi、Cretu Ovidiu、Kikkawa Jun、Kimoto Koji、Kalahurska Katarzyna、Gil Barbara、Mazur Michal、Zapotoczny Szczepan、Cejka Jiri、Grzybek Justyna、Kowalczyk Andrzej
    • Journal Title

      Journal of the American Chemical Society

      Volume: 143 Pages: 11052~11062

    • DOI

      10.1021/jacs.1c04081

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Nanofluidic Anion Transport through Reconstructed Membrane of Layered Double Hydroxide Nanosheets2022

    • Author(s)
      Fang Xian, Renzhi Ma, Yoshiyuki Sugahara, Takayoshi Sasaki
    • Organizer
      日本化学会第102春季年会(2022)
  • [Presentation] Synthesis of Fe-based (oxy)hydroxides nanosheets for oxygen evolution reaction (OER) electrocatalyst2022

    • Author(s)
      Lulu Jia, Renzhi Ma, Yoshiyuki Sugahara, Takayoshi Sasaki
    • Organizer
      日本化学会第102春季年会(2022)
  • [Presentation] Exploration of LDH nanosheets and their nanocomposites for emergent functions2021

    • Author(s)
      Renzhi Ma
    • Organizer
      IIT and NIMS Materials Science Workshop
    • Int'l Joint Research / Invited
  • [Presentation] Soft Chemical Synthesis, Hetero-assembly and Emergent Properties of 2D Functional Nanosheets2021

    • Author(s)
      Renzhi Ma
    • Organizer
      14th Pacific Rim Conference on Ceramic and Glass Technology and GOMD 2021 Division Meeting (PACRIM 14/GOMD '21)
    • Int'l Joint Research / Invited
  • [Presentation] Soft chemical synthesis and assembly of 2D nanosheets for energy-related applications2021

    • Author(s)
      Renzhi Ma
    • Organizer
      The 5th International Conference on Nanoenergy and Nanosystems 2021 (NENS2021)
    • Int'l Joint Research / Invited
  • [Presentation] Exploration of 2D Nanosheets and Their Heterostructures for Energy-related Applications2021

    • Author(s)
      Renzhi Ma、Takayoshi Sasaki
    • Organizer
      2021 International Conference on Materials Science and Engineering, Brisbane, Australia
    • Int'l Joint Research / Invited

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Published: 2022-12-28  

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