期刊
JOURNAL OF POWER SOURCES
卷 347, 期 -, 页码 14-20出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.02.049
关键词
Protonic ceramic fuel cells; Electrolyte materials; Sinterability; Protonic conductivity
资金
- National Natural Science Foundation of China [51402266, 21401171]
- College students innovation and Entrepreneurship Project [201410491028]
- Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) [CUG140608]
During the application of protonic ceramic fuel cells (PCFCs), Co species derived from Co-containing cathodes readily diffuse into electrolyte layer. In this study, the influence of cobalt doping on the sintering and protonic conducting properties of BaZr0.1Ce0.7Y0.1Yb0.1O3-delta (BZCYYb) electrolytes is evaluated. The Co-doped BZCYYb oxides prepared by a sol-gel way exhibit the orthorhombic perovskite structure. A trade-off relation between the sinterability and protonic conductivity of Co doped BZCYYb oxides is identified. Furthermore, BaZr0.1Ce0.68Y0.1Yb0.1C0.02O3-delta, (BZCYYbC2) with a compromise between sinterability and protonic conductivity is further applied as electrolyte of a single cell. The single cell with BZCYYbC2 electrolyte demonstrates a competitive power density of 0.67 W cm(-2) at 700 degrees C. (C) 2017 Elsevier B.V. All rights reserved.
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