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, Keyi Yashiro, Atsushi Kaimai, Tatsuya Kawada, Junichiro Mizusaki

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    60 Citations (Scopus)

    Abstract

    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
    Pages (from-to)A488-A492
    JournalJournal of the Electrochemical Society
    Volume152
    Issue number3
    DOIs
    Publication statusPublished - Apr 8 2005

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Renewable Energy, Sustainability and the Environment
    • Surfaces, Coatings and Films
    • Electrochemistry
    • Materials Chemistry

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