Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1287148 | Journal of Power Sources | 2006 | 7 Pages |
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 0.6 V 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.
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Authors
Weimin Chen, Gongquan Sun, Zhenxing Liang, Qing Mao, Huanqiao Li, Guoxiong Wang, Qin Xin, Hyuk Chang, Chanho Pak, Doyoung Seung,