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

研究成果: Conference article査読

3 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)209-214
ページ数6
ジャーナルMaterials Research Society Symposium - Proceedings
513
DOI
出版ステータスPublished - 1998
イベントProceedings of the 1998 MRS Spring Meeting - San Francisco, CA, USA
継続期間: 1998 4月 131998 4月 17

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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