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Elucidation of electrode reactions and their acceleration to realize the next generation fuel cell ITFC

Research Project

Project/Area Number 21H04607
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionTohoku University

Principal Investigator

Omata Takahisa  東北大学, 多元物質科学研究所, 教授 (80267640)

Co-Investigator(Kenkyū-buntansha) 石山 智大  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 主任研究員 (30760194)
鈴木 一誓  東北大学, 多元物質科学研究所, 講師 (60821717)
Project Period (FY) 2021-04-05 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥43,550,000 (Direct Cost: ¥33,500,000、Indirect Cost: ¥10,050,000)
Fiscal Year 2023: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2021: ¥28,080,000 (Direct Cost: ¥21,600,000、Indirect Cost: ¥6,480,000)
Keywords混合伝導体 / プロトン伝導体 / 燃料電池 / 空気極材料
Outline of Research at the Start

無加湿雰囲気の250~400℃で動作する中温作動型燃料電池(dry-ITFC)は,水素社会の実現に必須の次世代燃料電池である。本研究では,WO3系プロトン・電子混合伝導体を電極材料へと展開するため,電極反応に関与する気体分子の吸着や交換などの素反応とそれを律する因子の理解に基づき電極反応を高速化する。これを代表者らが開発したリン酸塩ガラス電解質に適用することで、300℃付近で実用的出力を発生するdry-ITFCを実現する。

Outline of Final Research Achievements

In this study, a case study using a mixed protonic and electronic conductor WO3 and exploring new mixed protonic and electronic conductors have been performed as part of the development of electrode materials for the realization of dry-ITFC using a proton conducting glass as an electrolyte. We found that the process gas pressure during sputtering affects the microstructure of the WO3 thin film, that the large resistance of proton migration at the glass electrolyte/electrode interface greatly reduces the output power of the fuel cell, and that MgIn2O4 and Nb-doped TiO2 are excellent mixed protonic and electronic conductors.

Academic Significance and Societal Importance of the Research Achievements

本研究により見出された成果は、メタノールやメチルシクロヘキサンなどの有機液体水素キャリアを直接燃料として使用可能な、300℃付近で作動する燃料電池の実現に貢献する。また、本研究により見出された新たなプロトン電子混合伝導体は、燃料電池に限らず水素の製造や利用に関わる各種のデバイスへの応用も期待でき、物質科学の進展だけでなく、水素社会への移行にも大きく貢献する。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Comments on the Screening Results   Annual Research Report
  • Research Products

    (33 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (26 results) (of which Int'l Joint Research: 14 results,  Invited: 7 results)

  • [Int'l Joint Research] Xi'an University of Technology(中国)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Enhancing proton mobility and thermal stability in phosphate glasses with WO<sub>3</sub>: the mixed glass former effect in proton conducting glasses2023

    • Author(s)
      Sharma Aman、Suzuki Issei、Ishiyama Tomohiro、Omata Takahisa
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 25 Issue: 28 Pages: 18766-18774

    • DOI

      10.1039/d3cp01453c

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High proton conductivity and thermal stability at intermediate temperatures of phosphate glasses and their melts containing rare-earth oxides achieved by high thermal stability of proton carriers2023

    • Author(s)
      Tatebayashi Takashi、Ishiyama Tomohiro、Kinoshita Takuya、Fang Tong、Ren Yang、Zagarzusem Khurelbaatar、Fujioka Masaya、Zhao Gaoyang、Liu Meng、Omata Takahisa、Nishii Junji
    • Journal Title

      Solid State Ionics

      Volume: 403 Pages: 116413-116413

    • DOI

      10.1016/j.ssi.2023.116413

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Proton-conducting phosphate glass: Recent development as an electrolyte in intermediate temperature fuel cells2022

    • Author(s)
      ISHIYAMA Tomohiro、YAMAGUCHI Takuya、OMATA Takahisa
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 130 Issue: 1 Pages: 1-9

    • DOI

      10.2109/jcersj2.21110

    • NAID

      130008139203

    • ISSN
      1348-6535, 1882-0743
    • Year and Date
      2022-01-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Origin of the Temperature Dependence of Proton Conductivity in Phosphate Glass Prepared by Alkali-Proton Substitution Technique2022

    • Author(s)
      Ishiyama Tomohiro、Yamaguchi Takuya、Nishii Junji、Yamashita Toshiharu、Kawazoe Hiroshi、Omata Takahisa
    • Journal Title

      Journal of The Electrochemical Society

      Volume: 169 Issue: 3 Pages: 034517-034517

    • DOI

      10.1149/1945-7111/ac5793

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigating the role of GeO<sub>2</sub> in enhancing the thermal stability and proton mobility of proton-conducting phosphate glasses2021

    • Author(s)
      Omata Takahisa、Sharma Aman、Kinoshita Takuya、Suzuki Issei、Ishiyama Tomohiro、Kohara Shinji、Ohara Koji、Ono Madoka、Fang Tong、Ren Yang、Fujioka Masaya、Zhao Gaoyang、Nishii Junji
    • Journal Title

      Journal of Materials Chemistry A

      Volume: 9 Issue: 36 Pages: 20595-20606

    • DOI

      10.1039/d1ta04445a

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Anhydrous Silicophosphoric Acid Glass: Thermal Properties and Proton Conductivity2021

    • Author(s)
      Omata Takahisa、Sharma Aman、Suzuki Issei、Ishiyama Tomohiro、Kohara Shinji、Ohara Koji、Ono Madoka、Ren Yang、Zagarzusem Khurelbaatar、Fujioka Masaya、Zhao Gaoyang、Nishii Junji
    • Journal Title

      ChemPhysChem

      Volume: 23 Issue: 3

    • DOI

      10.1002/cphc.202100840

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Proton conducting phosphate glass: A method to inject highly concentrated proton carriers achieving high proton conductivity at intermediate temperatures2024

    • Author(s)
      T. Omata, T. Ishiyama, J. Nishii
    • Organizer
      18th Asian Conference on Solid State Ionics (19-22 Febryary, 2024), Chennai, India
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Mixed protonic and electronic conduction in MgIn2O4 under hydrogen atmosphere and its proton partial conductivity2024

    • Author(s)
      S. Kudo, T. Omata
    • Organizer
      18th Asian Conference on Solid State Ionics (19-22 Febryary, 2024), Chennai, India
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phosphate and phosphoric acid glasses: Promising materials for electrolytes in next-gen fuel cells and electrolysis cells operating around 300℃2024

    • Author(s)
      T. Omata
    • Organizer
      International Seminar on "Emerging Materials for Energy Application", organized by PG & Research Department of Physics, Mannar Thirumalai Naicker College, Madurai, Tamil Nadu, India on 24th Feb 2024.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Application of statistical approaches to proton-conducting phosphate glasses: Study of the effect of oxide components on proton mobility and thermal stability2024

    • Author(s)
      T. Omata
    • Organizer
      MRS/ACerS Joint AI and ML Virtual Workshop, (26-27, March, 2024) On-line
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] リン酸塩ガラスの熱安定性とプロトン伝導性に及ぼすWO3添加の効果2024

    • Author(s)
      アマン シャルマ, 鈴木 一誓, 石山 智大, 小俣 孝久
    • Organizer
      日本セラミックス協会2024年年会(2024.3.14-16)熊本大学黒髪キャンパス,熊本市
    • Related Report
      2023 Annual Research Report
  • [Presentation] NbドープしたTiO2に水素雰囲気下で溶解したプロトンの伝導性と化学環境2024

    • Author(s)
      白岩拓真,山崎智之,小俣孝久
    • Organizer
      日本セラミックス協会2024年年会(2024.3.14-16)熊本大学黒髪キャンパス,熊本市
    • Related Report
      2023 Annual Research Report
  • [Presentation] Phosphate and phosphoric acid glasses: Promising electrolytes for next-generation fuel and electrolysis cells operating at around 300 °C.2023

    • Author(s)
      T. Omata, T. Ishiyama, J. Nishii
    • Organizer
      2023 Annual Meeting of Society of Glass Technology, September 4-6, 2023, Cambridge, UK
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Enhancing proton migration in phosphate glasses by addition of WO32023

    • Author(s)
      T. Omata, A. Sharma, I. Suzuki, T. Ishiyama
    • Organizer
      21st International conference on solid state proton conductors, 17-22 September, Fukuoka, Japan
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Suppression of proton migration by SiO6 in phosphate glasses and its mitigation by AlO6 substitution2023

    • Author(s)
      T. Ishiyama, Y. Yamada, H. Nagashima, I. Suzuki, M. Fujioka, M. Ono, T. Omata, J. Nishii
    • Organizer
      21st International conference on solid state proton conductors, 17-22 September, Fukuoka, Japan
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Controlling proton transport in phosphate glasses2023

    • Author(s)
      T. Omata
    • Organizer
      3rd ELSICS (Energy Landscapes and Structure in Ion Conducting Solids) Workshop and Bunsen-Colloquium, 4-6 October, 2023, Ulm, Germany
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phosphate and phosphoric acid glasses as electrolytes in electrochemical cells operating around 300 °C2023

    • Author(s)
      T. Omata
    • Organizer
      2023 Tohoku-NTUT Joint Symposium, December 11-12, 2023, Taipei, Taiwan
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 中温域でプロトン・電子混合伝導性を発現する材料HxWO3の混合伝導性2023

    • Author(s)
      松尾蘭太郎, 小俣孝久, 石山智大, 山口拓哉
    • Organizer
      第17回 固体イオニクスセミナー(2023.8.7-9)山形蔵王温泉ルーセントタカミヤ
    • Related Report
      2023 Annual Research Report
  • [Presentation] MgIn2O4の水素雰囲気における高温でのプロトン-電子混合伝導性2023

    • Author(s)
      工藤咲季,小俣孝久
    • Organizer
      第17回 固体イオニクスセミナー(2023.8.7-9)山形蔵王温泉ルーセントタカミヤ
    • Related Report
      2023 Annual Research Report
  • [Presentation] TiO2の水素雰囲気下中温域におけるプロトン-電子混合伝導性2023

    • Author(s)
      白岩拓真,小俣孝久
    • Organizer
      第17回 固体イオニクスセミナー(2023.8.7-9)山形蔵王温泉ルーセントタカミヤ
    • Related Report
      2023 Annual Research Report
  • [Presentation] MgIn2O4の水素雰囲気におけるプロトン-電子混合伝導性2023

    • Author(s)
      工藤咲季,鈴木一誓,山﨑智之,小俣孝久
    • Organizer
      日本セラミックス協会 第36回秋季シンポジウム(2023.9.6-8)京都工芸繊維大学,京都市
    • Related Report
      2023 Annual Research Report
  • [Presentation] 水素雰囲気下におけるNbドープしたTiO2のプロトン-電子混合伝導性2023

    • Author(s)
      白岩拓真,山﨑智之,小俣孝久
    • Organizer
      日本セラミックス協会 第36回秋季シンポジウム(2023.9.6-8)京都工芸繊維大学,京都市
    • Related Report
      2023 Annual Research Report
  • [Presentation] プロトン伝導性酸化物中のO-H結合の強度を律する機構2023

    • Author(s)
      小俣孝久
    • Organizer
      第49回固体イオニクス討論会(2023.11.15-17)北海道大学,札幌市
    • Related Report
      2023 Annual Research Report
  • [Presentation] Promotion of proton migration by controlling phosphate flamework in proton conducting phosphate glasses2023

    • Author(s)
      T. Omata
    • Organizer
      Chonnam National University - Tohoku University Ionics Workshop
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Proton conductivity and thermal stability of anhydrous silico- and germano-phosphoric acid glasses2022

    • Author(s)
      T. Omata, A. Sharma, I. Suzuki, T. Ishiyama, J. Nishii
    • Organizer
      23rd International Conference on Solid State Ionics (SSI-23)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] d10s0電子配置を有する陽イオンからなる酸化物半導体MgIn2O4の高温での電気伝導性2022

    • Author(s)
      工藤咲季,鈴木一誓,小俣孝久
    • Organizer
      第16回固体イオニクスセミナー
    • Related Report
      2022 Annual Research Report
  • [Presentation] プロトン伝導性リン酸塩ガラスを電子ブロッキング電極とした中温域でのHxWO3のプロトン伝導度測定2022

    • Author(s)
      松尾 蘭太郎、石山 智大、山口 拓哉、小俣 孝久
    • Organizer
      日本セラミックス協会 第35回秋季シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 新たな擬固体リン酸ポリマー 無水シリコリン酸・ゲルマノリン酸ガラスの プロトン伝導性と中温域での安定性2022

    • Author(s)
      小俣 孝久、Aman Sharma、鈴木 一誓、石山智大、西井準治
    • Organizer
      第48回固体イオニクス討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Experimental study of the effect of WO3 on proton mobility and thermal stability of proton conducting phosphate glasses2022

    • Author(s)
      A. Sharma, I. Suzuki, T. Omata
    • Organizer
      17th Asian Conference on Solid State Ionics (ACSSI-2020)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Understanding the effect of oxide components on proton mobility in phosphate glasses; statistical analysis and experimental studies2021

    • Author(s)
      T. Omata, I. Suzuki, A. Sharma, T. Kinoshita, T. Ishiyama, S. Kohara, T. Yamashita, H. Kawazoe, T. Fang, Y. Ren, M. Fujioka, M. Ono, G. Zhao, J. Nishii
    • Organizer
      International workshop on solid state proton conductors (SSPC-20), Online Conference, September 27 - October 1, 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Technique for evaluating isotope exchange reaction coefficients on proton-conducting phosphate glass surfaces by Raman spectroscopy2021

    • Author(s)
      T. Ishiyama, T. Yamaguchi, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata
    • Organizer
      International workshop on solid state proton conductors (SSPC-20), Online Conference, September 27 - October 1, 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] GeO2添加によるリン酸塩ガラスのプロトン移動度と熱安定性の向上2021

    • Author(s)
      小俣 孝久、Aman Sharma、鈴木 一誓、石山智大、西井準治
    • Organizer
      第47回固体イオニクス討論会,徳島,2021.12.8
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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