Journal
JOURNAL OF POWER SOURCES
Volume 178, Issue 2, Pages 683-686Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2007.08.007
Keywords
perovskite-type oxide; oxygen reduction; crossover; ethylene glycol; methanol
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Carbon-supported La1-xSrxMnO3 (LSM/C) was prepared by reversible homogeneous precipitation method, and its catalytic activities for oxygen reduction under the existence of ethylene glycol (EG) were investigated by using rotating disk electrode. LSM/C exhibited the high activity for oxygen reduction irrespective with the presence of EG, indicating that EG is not oxidized by LSM/C at the cathode side in the present system. Consequently, LSM/C can serve as a cathode catalyst in alkaline direct alcohol fuel cells with no crossover problem. Performance test for fuel cells operation also supported these results and showed cathodic polarization curves were not affected by the concentration of EG supplied to anode even at 5 mol dm(-3). (C) 2007 Elsevier B.V. All rights reserved.
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