ERDA study on proton migration induced by electric potential in SrZrO3, SrCeO3, and BaCeO3 oxides: Measurements of proton transport number and proton diffusivity

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

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

Migration of protons dissolved in acceptor doped SrZrO3, SrCeO3 and BaCeO3 oxides has been examined under an applied electric potential over a range of temperature from 25 to 220 °C. Protons which dissolved in these oxides migrated to the cathode, and they were trapped there when the cathode material had a good ability to getter the migrating hydrogen. The amount of hydrogen accumulated in the cathode could be measured by the ERDA method using a high-energy 4He beam. We measured the amount of hydrogen in the cathode while monitoring the dc current passed through the oxide specimen. The proton transport number was determined from the ratio of the number of hydrogen in the cathode to the total numbers of charge through the specimen. The diffusion coefficient of proton was evaluated using the proton transport number and proton concentration in the specimen.

Original languageEnglish
Pages (from-to)209-214
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume513
DOIs
Publication statusPublished - 1998
EventProceedings of the 1998 MRS Spring Meeting - San Francisco, CA, USA
Duration: 1998 Apr 131998 Apr 17

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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