Proton Conduction in Cerium- and Zirconium-Based Perovskite Oxides

Proton Conduction in Cerium- and Zirconium-Based Perovskite Oxides 

Some perovskite-type oxides show protonic conduction and are useful for hydrogen-related electrochemical devices, including application to solid oxide fuel cells (SOFCs). Iwahara et al. reported protonic conductivity of strontium-cerate-based perovskite-type oxides in 1981 [1], Since that time, various perovskite-type proton-conducting oxides have been found. For use of the proton-conducting perovskite oxides, we should understand not only their merits but also their weak points. This chapter concerns the protonconducting properties of typical cerium- and zirconium-containing perovskite oxides from the points of view of conductivity, stability, electrode affinity, and dopant effect. Mixed conduction occurring in a special composition of the perovskite oxide is also introduced. 

INAMORI Frontier Research Center, Kyushu University, 744 Motooka, Nishiku, 

Ishihara (ed.), Perovskite Oxide for Solid Oxide Fuel Cells, 

Fuel Cells and Hydrogen Energy, DOI 10.1007/978-0-387-77708-5 12, Springer Science+Business Media, LLC 2009 

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