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: Conference 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/cm3@0.7MPa. The diffusivity is 3×10-10 m2/s. These values are discussed with comparing the values measured in conventional method.

本文言語English
ホスト出版物のタイトルPolymer Electrolyte Fuel Cells 11
出版社Electrochemical Society Inc.
ページ1423-1430
ページ数8
1
ISBN(電子版)9781607682547
ISBN(印刷版)9781607682547
DOI
出版ステータスPublished - 2011
イベント11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting - Boston, MA, United States
継続期間: 2011 10 92011 10 14

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

Other

Other11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting
国/地域United States
CityBoston, MA
Period11/10/911/10/14

ASJC Scopus subject areas

  • 工学(全般)

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