期刊
JOURNAL OF POWER SOURCES
卷 217, 期 -, 页码 164-169出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2012.05.045
关键词
Single component fuel cells; Composite electrolyte; p and n-type semiconductors; Composition; Thickness; Electrolyte free
资金
- Swedish Research Council (VR) [621-2011-4983]
- Swedish VINNOVA Systems
- Chinese Scholarship Council
Electrochemical performances of single component fuel cells (SCFCs) based on mixed ion and electron conductors have been studied as a function of composition and pellet thickness by polarization curves and electrochemical impedance spectroscopy. The electronic conductor of LNCZO shows conductivities of 21.7 and 5.3 S cm(-1) in H-2 and in air, respectively. SCFC using 40 wt. % of LNCZO and 60 wt. % of ion conductive SDC-Na2CO3 with a thickness of 1.10 mm shows the highest power density of 0.35 W cm(-2) at 550 degrees C. The performance is correlated to the mixed conduction properties (ionic and electronic, p and n-type) and the microstructure of the functional SCFC layer. (C) 2012 Elsevier B.V. All rights reserved.
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