Hydrogen electrode reaction in some imide-type room-temperature ionic liquids

R. Fukuta, Y. Katayama, T. Miura

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

11 Citations (Scopus)


The hydrogen (H2) electrode reactions were investigated in three kinds of imide-type ionic liquids having 1-n-butyl-1-methylpyrrolidinium (BMP+), trimethy-n-hexylammonium (TMHA+) and 1-ethyl-3-methylimidazolium (EMI+) as cations. The diffusion coefficient and solubility of H2 were determined by chronoamperometric technique using both macro- and ultramicrodisk electrodes. The diffusion coefficient of HTFSI was also examined by dissolving bis(trifluoromethylsulfonyl)imide acid (HTFSI) in the ionic liquids. The solubility of H2 was nearly constant in each system within the temperature range from 25 to 70°C The difference in the solubility of H 2 may be explained by the difference in the free volume estimated from the density and the molar volume of ions. The order of the diffusion coefficients of H2 and HTFSI in each system indicates that the viscosity is a dominant factor on the diffusion process of HTFSI, while the diffusion of H2 is not affected by the viscosity. copyright The Electrochemical Society.

Original languageEnglish
Title of host publicationECS Transactions - 15th International Symposium on Molten Salts
PublisherElectrochemical Society Inc.
Number of pages10
ISBN (Electronic)9781566775922
ISBN (Print)9781566775922
Publication statusPublished - 2006
Event15th International Symposium on Molten Salts - 210th ECS Meeting - Cancun, Mexico
Duration: 2006 Oct 292006 Nov 3

Publication series

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


Other15th International Symposium on Molten Salts - 210th ECS Meeting

ASJC Scopus subject areas

  • Engineering(all)


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