期刊
JOURNAL OF POWER SOURCES
卷 160, 期 2, 页码 933-939出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2006.02.069
关键词
direct methanol fuel cell (DMFC); potential scan; stability; PtRu/C; electrocatalyst
Potential-scan tests were conducted to evaluate the stability of a PtRu/C electrocatalyst at anode potentials in a direct methanol fuel cell (DMFC). The results show that, under normal operating conditions, the anode potential in a DMFC is benign for the PtRu/C electrocatalyst. But in the case of deep discharge or short circuit, the anode potential value may exceed 0.6V versus DHE, which is harmful to the PtRu/C electrocatalyst. The dissolution of catalyst components results in an enhanced ohmic resistance and a lowered catalytic activity for methanol electro-oxidation. (c) 2006 Elsevier B.V. All rights reserved.
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