Proton conductive properties of gadolinium-doped barium cerates at high temperatures

Proton conductive properties of Gd-doped BaCeO 3 ceramics were investigated by electrochemical methods (hydrogen permeation test and hydrogen-oxygen fuel cell test) in the temperature range of 600°C to 1000°C. As a result of electrochemical hydrogen- permeation tests, it was verified that the proton...

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Bibliographic Details
Published in:Solid state ionics 1992-07, Vol.53, p.998-1003
Main Authors: Taniguchi, Noboru, Hatoh, Kazuhito, Niikura, Junji, Gamo, Takaharu, Iwahara, Hiroyasu
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Diffusion in solids
Exact sciences and technology
Physics
Self-diffusion and ionic conduction in nonmetals
Transport properties of condensed matter (nonelectronic)
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Summary:Proton conductive properties of Gd-doped BaCeO 3 ceramics were investigated by electrochemical methods (hydrogen permeation test and hydrogen-oxygen fuel cell test) in the temperature range of 600°C to 1000°C. As a result of electrochemical hydrogen- permeation tests, it was verified that the proton was the only conductive species in BaCe 1− x Gdi x O 3−α in the absence of oxygen at 600°C–1000°C. Next the relationship between conductivity and Gd-substitution value of x BaCe 1− x Gd x O 3−α (0.5
ISSN:0167-2738
1872-7689
DOI:10.1016/0167-2738(92)90283-U