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BaZr0.9Y0.1O2.95/Na_2SO_4 Composite with Enhanced Protonic Conductivity 认领 引用 被引量:4
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作者 PENG Zhenzhen GUO Ruisong +1 位作者 YIN Ziguang LI Juan 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2009年第2期269-272,共4页
Heterogeneous composite BaZr0.9Y0.1O2.95/Na2SO4 was designed and fabricated with Y-doped BaZrO3 as matrix and Na2SO4 as dispersant by conventional powder processing to improve the total conductivity of barium zirconat... Heterogeneous composite BaZr0.9Y0.1O2.95/Na2SO4 was designed and fabricated with Y-doped BaZrO3 as matrix and Na2SO4 as dispersant by conventional powder processing to improve the total conductivity of barium zirconate.The electrical conduction of the composite was studied by electrical and electrochemical methods.Microstructure of the heterogeneous composite was examined by SEM.The experimewtal results show that the protonic conductivity of Y-doped BaZrO3 is greatly improved upon incorporating Na2SO4 in the material.Microstructure observation indicates that a multiphase structure with Na2SO4 disperses at the grain boundaries of BaZr0.1Y0.9O2.95.Electromotive force(EMF)measurements under fuel cell conditions reveal that the total ionic transport number of the composite is more than 0.9 at 750℃. 展开更多
关键词 BaZr0.9Y0.1O2.95/Na2SO4 composite electrical properties proton conductor
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