Low temperature preparation and fuel cell properties of rare earth doped barium cerate solid electrolytes
Data(s) |
1999
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Resumo |
The solid electrolytes, BaCe(0.8)Ln(0.2)O(2.9) (Ln: Gd, Sm, Eu), were prepared by the sol-gel method. XRD indicated that a pure orthorhombic phase was formed at 900 degrees C. The synthesis temperature by the sol-gel method was about 600 degrees C: lower than the high temperature solid phase reaction method. The electrical conductivity and impedance spectra were measured and the conduction mechanism was studied. The grain-boundary resistance of the solid electrolyte could be reduced or eliminated by the sol-gel method. The conductivity of BaCe0.8Gd0.2O2.9 is 7.87 x 10(-2) S.cm(-1) at 800 degrees C. The open-circuit voltage of hydrogen-oxygen fuel cell using BaCe0.8Gd0.2O2.9 as electrolyte was near to 1 V and its maximum power density was 30 mW.cm(-2). |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Jiang K;He ZQ;Meng J;Ren YF;Su Q.Low temperature preparation and fuel cell properties of rare earth doped barium cerate solid electrolytes,SCIENCE IN CHINA SERIES B-CHEMISTRY,1999,42(3):298-304 |
Palavras-Chave | #PEROVSKITE #CONDUCTION |
Tipo |
期刊论文 |