期刊
JOURNAL OF POWER SOURCES
卷 231, 期 -, 页码 213-218出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.01.011
关键词
Solid oxide fuel cell; Proton conductor; Doped barium cerate; Carbonate coprecipitation; Spin coating
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0022930]
- National Research Foundation of Korea [2010-0022930] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
BaZr0.1Ce0.7Y0.1Yb0.1O3-delta (BZCYYb) electrolyte powders are prepared by ammonium carbonate coprecipitation. Crystalline fine powders with a pure perovskite phase are obtained by the calcination of the precursor powders at 1000 degrees C. The relative densities of the sample pellets sintered at 1400 and 1500 degrees C for 5 h are 96.5 and 97.9% (% of theoretical), respectively. The electrical conductivities of the BZCYYb electrolytes exhibit high values of 1.9 x 10(-2) S cm(-1) at 500 degrees C and 7.4 x 10(-2) S cm(-1) at 750 degrees C with an activation energy of 0.45 eV. An anode-supported cell is also fabricated from the synthesized BZCYYb electrolyte using spin coating. A dense, crack-free 10-mu m-thick electrolyte film has been successfully fabricated. The fabricated single cell exhibits promising performance, with maximum power densities of 1.0 W cm(-2) at 750 degrees C and 0.23 W cm(-2) at 500 degrees C. (C) 2013 Elsevier B.V. All rights reserved.
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