1. The stability of a PtRu/C electrocatalyst at anode potentials in a direct methanol fuel cell
- Author
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Chen, Weimin, Sun, Gongquan, Liang, Zhenxing, Mao, Qing, Li, Huanqiao, Wang, Guoxiong, Xin, Qin, Chang, Hyuk, Pak, Chanho, and Seung, Doyoung
- Subjects
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FUEL cells , *METHANOL , *ELECTROLYTIC oxidation , *ELECTRIC circuit breakers - Abstract
Abstract: 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. [Copyright &y& Elsevier]
- Published
- 2006
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