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http://dx.doi.org/10.4313/JKEM.2007.20.10.918

Analysis on the Fuel Cell Performance by the Impedance Method  

Kim, Gwi-Yeol (울산대학교 전기전자정보시스템공학부)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.20, no.10, 2007 , pp. 918-923 More about this Journal
Abstract
Fuel cell is a modular, high efficient and environmentally energy conversion device, it has become a promising option to replace the conventional fossil fuel based electric power plants. The high temperature fuel cell has conspicuous feature and high potential in being used as an energy converter of various fuel to electricity and heat. Corrosions in molten electrolytes and the electric conductivity across the oxide scale have crucial characteristics. When molten salts are involved, high temperature corrosions become severe. In this sense, corrosions of alloys with molten carbonates have the most severe material problems. Systematic investigation on corrosion behavior of Fe/21Cr/Ti or Al alloy has been done in (62+38)mol% (Li+K)$CO_3$ melt at $650^{\circ}C$ using the electrochemical impedance spectroscopy method. It was found that the corrosion current of these Fe-based alloys decreased with increasing Al or Ti. And Al addition improved the corrosion resistance of this type of specimen and more improvement of corrosion resistance was observed at the specimen added with Al.
Keywords
Impedance method; High temperature fuel cell; Performance analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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