• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Theoretical design of highly ion conductive membranes for alkaline fuel cells using reactive molecular dynamics simulations

Research Project

Project/Area Number 19K14882
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionTohoku University

Principal Investigator

Mabuchi Takuya  東北大学, 学際科学フロンティア研究所, 助教 (10795610)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords分子シミュレーション / アニオン輸送 / 高分子 / 燃料電池 / 水素 / 流体工学
Outline of Research at the Start

本申請課題では、研究目的を達成するために具体的に以下の3つのサブテーマを実施する。
(1) ホッピング現象を考慮したアニオン輸送シミュレータの構築、(2) アニオン伝導特性を支配する水チャンネル形状特性の解明、(3) 分子構造制御による高アニオン伝導性電解質膜の理論設計指針の提案
上記3つのサブテーマを逐次的に推進していくことで、目的を達成する。従来の古典的な分子シミュレーション手法では困難とされてきた化学変化を伴う複雑な輸送機構を考慮したアニオン輸送シミュレータを構築することで、アニオン輸送現象の本質的な理解を可能とし、輸送特性と構造特性の相関を定量的に解明する。

Outline of Final Research Achievements

A reactive molecular dynamics simulation has been performed to understand the anion transport mechanisms including the Grotthuss mechanism. The anharmonic two-state empirical valence bond model has been developed to describe efficiently anion transport through the Grotthuss hopping mechanism within the simplicity of the theoretical framework. The relationship between anion transport and water clustering in polymer electrolyte membranes have been characterized and the cluster analyses elicit that the clustering growth behavior below and above the percolation strongly affect the anion transport properties.

Academic Significance and Societal Importance of the Research Achievements

本研究では、ナノスケールの流体構造と輸送特性の解析からアニオン伝導の支配因子を特定することにより、マクロ現象のみの解析では解明できないアニオンの輸送特性に物理的解釈を与えるところに学術的な独自性がある。本手法による解析技術の確立は、電解質膜開発のような材料工学に限らず、化学工学や生物工学などの工学関連分野に加えて、生体分子システムを扱う生化学分野など広範な分野への応用が可能であり、学術的なインパクトも大きいと考える。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] University of Johannesburg(南アフリカ)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Nafion Ionomer Dispersion in Mixtures of 1‐Propanol and Water Based on the Martini Coarse‐Grained Model2020

    • Author(s)
      Mabuchi Takuya、Huang Sheng‐Feng、Tokumasu Takashi
    • Journal Title

      Journal of Polymer Science

      Volume: 58 Issue: 3 Pages: 487-499

    • DOI

      10.1002/pol.20190101

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of water nanochannel diameter on proton transport in proton-exchange membranes2019

    • Author(s)
      Takuya Mabuchi, Takashi Tokumasu
    • Journal Title

      Journal of Polymer Science Part B: Polymer Physics

      Volume: 57 Issue: 13 Pages: 867-878

    • DOI

      10.1002/polb.24842

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Multiscale modeling and simulation of self-assembled polymers for fuel cell applications2020

    • Author(s)
      Takuya Mabuchi
    • Organizer
      The 5th International-Tropical Renewable Energy Conference (i-TREC) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ナノスケール構造を考慮したPEFC触媒層内輸送・反応現象2019

    • Author(s)
      小林光一,馬渕拓哉,井上元,徳増崇
    • Organizer
      第33回数値流体力学シンポジウム
    • Related Report
      2019 Research-status Report
  • [Remarks] Researchmap

    • URL

      https://researchmap.jp/mabuchi?lang=en

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi