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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 11
Pages1423-1430
Number of pages8
Edition1
DOIs
Publication statusPublished - 2011 Dec 1
Event11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting - Boston, MA, United States
Duration: 2011 Oct 92011 Oct 14

Publication series

NameECS Transactions
Number1
Volume41
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

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

ASJC Scopus subject areas

  • Engineering(all)

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