E120 PEM内水分子拡散係数のNMR計測(新技術フォーラム-3 : 水素利用技術の進展と熱工学的問題)

• 津島 将司

  東工大炭素循環セ

• 寺西 一浩

  東工大

• 平井 秀一郎

  東工大炭素循環セ

書誌事項

タイトル別名

• E120 NMR measurement for water diffusivity in polymer electrolyte membrane

抄録

Self diffusion coefficients of water in polymer electrolyte fuel cell membrane(PEM) were measured using pulsed field gradient spin echo NMR measurement. Two types of PEM sample were investigated at various water content. It is shown that measured self-diffusion coefficients increased with water content in the membane, although no distinct difference was observed among two types of PEM. Furthermore, it is demonstrated that NMR imaging technique can be applied to probe water behaviors in PEM assembled in fuel cell under operation. It is shown that PEM gradually dried after the fuel cell began to be operated, resulting in decreasing output current.

収録刊行物

• 熱工学講演会講演論文集

  熱工学講演会講演論文集 2001 (0), 223-224, 2001

  一般社団法人 日本機械学会

キーワード

• solid polymer electrolyte membrane
• Nuclear Magnetic Resonane
• diffusion coefficient
• fuel cell

詳細情報

• CRID: 1390282681047087488
• NII論文ID: 110002527629
• DOI: 10.1299/jsmeptec.2001.0_223
• ISSN: 24331317
• Web Site: https://www.jstage.jst.go.jp/article/jsmeptec/2001/0/2001_223/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可