Measurement of hydrogen-gas solubility and diffusivity in polymer electrolyte membrane by NMR method

Ryosuke Nagahisa, Daiki Kuriya, Kuniyasu Ogawa, Yasuyuki Takata, Kohei Ito

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

Polymer electrolyte membrane (PEM) used for fuel cells and water electrolyzers is permeable to hydrogen gas, and the permeation causes to decrease the performance as electrochemical system. So, it is necessary to figure out the mechanism of hydrogen gas permeation and to develop the PEM that has lower gas permeability. In this study, we developed a new measurement system for hydrogen-gas solubility and diffusivity in PEM based on NMR method, which enables us to derive the solubility and diffusivity without assuming theoretical dissolution model. We apply the system to the dissolved hydrogen-gas in dry Nafion®117. The solubility obtained is proportional to ambient pressure and 2.9×10 -5 mol/cm 3@0.7MPa. The diffusivity is 3×10 -10 m 2/s. These values are discussed with comparing the values measured in conventional method.

本文言語英語
ホスト出版物のタイトルPolymer Electrolyte Fuel Cells 11
ページ1423-1430
ページ数8
1
DOI
出版ステータス出版済み - 12 1 2011
イベント11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting - Boston, MA, 米国
継続期間: 10 9 201110 14 2011

出版物シリーズ

名前ECS Transactions
番号1
41
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

その他

その他11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting
Country米国
CityBoston, MA
Period10/9/1110/14/11

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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