Protonic-electronic mixed conduction and hydrogen permeation in BaCe 0.9-xY0.1RuxO3-α

Hiroshige Matsumoto, Tetsuo Shimura, Tohru Higuchi, Hiroomi Tanaka, Koji Katahira, Takanori Otake, Takao Kudo, Keiji Yashiro, Atsushi Kaimai, Tatsuya Kawada, Junichiro Mizusaki

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)


The protonic-electronic mixed conductors are of great interest for their potential applications particularly for the hydrogen separation that is essential for hydrogen production from hydrocarbons. This paper deals with the mixed conduction properties of BaCe0.9-xY0.1Ru xO3-a (x = 0-0.1) in which Ru is partially substituted for Ce in the high-temperature proton conductor, BaCe0.9Y 0.1O3-α. Appreciable hydrogen permeation through the Ru-doped materials was observed and is attributed to ambipolar diffusion. The mixed conducting mechanism is discussed in terms of the defect chemistry and electronic structures revealed by the electrochemical and spectroscopic measurements. (c) 2005 The Electrochemical Society. All rights reserved.

Original languageEnglish
JournalJournal of the Electrochemical Society
Issue number3
Publication statusPublished - 2005 Apr 8

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces


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