Migration of hydrogen ions in SrCeO3 studied by ERD analysis

T. Arai, A. Kunimatsu, K. Takahiro, S. Nagata, S. Yamaguchi, Y. Akiyama, N. Sata, M. Ishigame

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)

Abstract

The migration of hydrogen ions dissolved in SrCeO3 induced by an applied electric potential has been studied over the temperature range from 25 to 200 °C. It was found that the hydrogen ions migrated towards the cathode, and they were trapped there when the cathode material had a good ability to getter the hydrogen. The amounts of hydrogen retained in the cathode could be determined by the ERDA technique using a high-energy 4He beam. In order to estimate the proton transport number, defined as the ratio of the protonic conductivity to the total electric conductivity, we measured the amount of hydrogen retained in the cathode as a function of electric charge number through the specimen. The protonic conductivity and the proton diffusion coefficient were evaluated using the proton transport number and proton concentration in the specimen.

Original languageEnglish
Pages (from-to)263-270
Number of pages8
JournalSolid State Ionics
Volume121
Issue number1
DOIs
Publication statusPublished - 1999 Jun
EventProceedings of the 1997 11th International Conference on Solid State Ionics, SSI-97 - Honolulu, HI, USA
Duration: 1997 Nov 161997 Nov 21

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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