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

Clarification of Proton Conduction Processes in Radical-doped Perfluorosulfonic Acid Ion Exchange Membranes Using Elastic Recoil Detection Technique

Research Project

Project/Area Number 19760483
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Structural/Functional materials
Research InstitutionTohoku University

Principal Investigator

TSUCHIYA Bun  Tohoku University, 金属材料研究所, 助教 (90302215)

Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥2,230,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥800,000 (Direct Cost: ¥800,000)
Keywords高分子電解質 / ラジカル / プロトン伝導度 / 水素輸送 / 反跳粒子検出法 / 反跳粒子出法
Research Abstract

New protonic conduction processes of perfluorosulfonic acid membranes by gamma-ray irradiation at a dose of up to approximately 50 kGy at room temperature in air have been found by direct current resistance and alternative current impedance measurements. The conductivities of the membranes at 300 K in air were enhanced to approximately three orders of magnitude higher than the conductivities of an unirradiated membrane. The hydrogen content in the near-surface region of the irradiated polymers was observed to increase to twice that of the unirradiated polymer by using the elastic recoil detection (ERD) technique. In addition, it was found by the water contact angle measurements that the water absorption characteristics were enhanced due to the production of hydrophilic radicals.By means of ultraviolet, visible, and infrared optical absorption and by hydrogen-ion-exchange capacity measurements, it was revealed that radiation-induced defects such as fluorocarbon and peroxy radicals, and C=O bonds included in carbonyl groups were related to the new proton conduction processes. The modification of hydrogen absorption characteristics due to the radiation-induced defects in near-surface regions leads to the enhancement of the proton conductivity.

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (19 results)

All 2010 2009 2008 2007

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (9 results)

  • [Journal Article] Radiation-induced changes in electrical and proton conductivities of BaCe_<0.9>Y_<0.1>O_<3-δ> upon irradiation by electron beams2010

    • Author(s)
      B.Tsuchiya
    • Journal Title

      Solid State Ionics 181

      Pages: 92-96

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of Ionization on Migration of Hydrogen Doped into BaCe_<0.9>Y_<0.1>O_<3-δ>2010

    • Author(s)
      B.Tsuchiya
    • Journal Title

      Solid State Ionics 181

      Pages: 138-141

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhancement of Protonic Conductivity in the Near Surface Regions of Radiation Induced Polymer Electrolyte Membranes2009

    • Author(s)
      B. Tsuchiya, S. Nagata, K. Saito, T. Shikama
    • Journal Title

      MATERIALS ISSUES IN A HYDROGEN ECONOMY

      Pages: 263-272

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Interaction of Water Vapor with Gamma-radiation-induced Defects in Proton Conductive Polymers2009

    • Author(s)
      B. Tsuchiya, Y. Konishi, S. Nagata, T. Shikama
    • Journal Title

      Solid State Ionics 180

      Pages: 585-588

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Interaction of Water Vapor with Radiation Induced Defects of Proton Conductive Polymers2009

    • Author(s)
      B.Tsuchiya
    • Journal Title

      Solid State Ionics 180

      Pages: 585-588

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interaction of Water Vapour with Radiation Induced Defects of Proton Conductive Polymers2009

    • Author(s)
      B. Tsuchiya
    • Journal Title

      Solid State Ionics (印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Protonic Conduction Processes of Gamma-ray Irradiated Perfluorosulfonic Acid Membranes2008

    • Author(s)
      B. Tsuchiya, Y. Konishi, S. Nagata, T. Shikama
    • Journal Title

      Solid State Ionics 179

      Pages: 1128-1132

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Protonic Conduction Processes of Gamma-ray Irradiated Perfluorosulfonic Acid Membranes2008

    • Author(s)
      B. Tsuchiya
    • Journal Title

      Solid State Ionics 179

      Pages: 1128-1132

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Change in Hydrogen Absorption Characteristic of SrCe_<0.95> Yb_<0.05> O_<3-σ> by Electron Beam Modification2008

    • Author(s)
      B. Tsuchiya
    • Journal Title

      Solid State Ionics 179

      Pages: 909-912

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Protonic Conduction Processes of Gamma-ray Irradiated Perfluorosulfonic Acid Membranes2008

    • Author(s)
      B. Tsuchiya
    • Journal Title

      Solid State Ionics (印刷中)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] マイクロ燃料電池用フッ素樹脂系イオン交換高分子電解質膜のプロトン伝導機構の改良2009

    • Author(s)
      土屋文、永田晋二、井上愛知、山本春也、趙明、四竃樹男
    • Organizer
      第3回イオンビームを用いた高機能材料の創製ワークショップ
    • Place of Presentation
      東北大学金属材料研究所
    • Related Report
      2009 Final Research Report
  • [Presentation] 水蒸気暴露されたフッ素樹脂系イオン交換高分子電解質膜内の水素移動機構2009

    • Author(s)
      土屋文、永田晋二、斉藤今朝美、四竃樹男
    • Organizer
      第35回固体イオニクス討論会
    • Place of Presentation
      大阪国際会議場
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] ラジカル含有フッ素樹脂系イオン交換高分子膜の水素吸収特性2009

    • Author(s)
      土屋文、永田晋二、斉藤今朝美、四竃樹男、山本春也
    • Organizer
      日本原子力学会秋の大会
    • Place of Presentation
      東北大学
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] Radiation Effects in Water Absorption Characteristics of Perfluorosulfonic Acid Membranes2009

    • Author(s)
      B. Tsuchiya, S. Nagata, K. Saito, T. Shikama
    • Organizer
      17th Int. Conf. on Solid State Ionics
    • Place of Presentation
      Toronto, Canada
    • Related Report
      2009 Final Research Report
  • [Presentation] ラジカル含有フッ素樹脂系イオン交換高分子膜におけるプロトン伝導機構の解明2008

    • Author(s)
      土屋文、永田晋二、斉藤今朝美、四竃樹男
    • Organizer
      第34回固体イオニクス討論会
    • Place of Presentation
      東京大学生産技術研究所
    • Related Report
      2009 Final Research Report 2008 Annual Research Report
  • [Presentation] ガンマ線照射された水素同位体回収用高分子膜のプロトン伝導機構2008

    • Author(s)
      土屋文、永田晋二、四竃樹男、山本春也
    • Organizer
      日本原子力学会秋の大会
    • Place of Presentation
      高知工科大学
    • Related Report
      2009 Final Research Report 2008 Annual Research Report
  • [Presentation] Interaction of Water Vapour with Radiation Induced Defects of Proton Conductive Polymers2007

    • Author(s)
      B. Tsuchiya
    • Organizer
      2nd Int. Conf. on Physics of Solid State Ionics
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      2007-12-18
    • Related Report
      2007 Annual Research Report
  • [Presentation] Enhancement of Protonic Conductivity in the Near Surface Regions of Radiation Induced Polymer Electrolyte Membranes2007

    • Author(s)
      B. Tsuchiya, S. Nagata, K. Saito, T. Shikama
    • Organizer
      Int. Symp. on Materials Issues in a Hydrogen Economy, Richmond
    • Place of Presentation
      Virginia, United States of America
    • Related Report
      2009 Final Research Report
  • [Presentation] Protonic Conduction Processes of Gamma-ray Irradiated Perfluorosulfonic Acid Membranes2007

    • Author(s)
      B. Tsuchiya, Y. Konishi, S. Nagata, T. Shikam
    • Organizer
      16th Int. Conf. on Solid State Ionics
    • Place of Presentation
      Shanghai, China
    • Related Report
      2009 Final Research Report 2007 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi