期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 154, 期 10, 页码 B1006-B1011出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.2764240
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Pt dissolution and further precipitation within the membrane of proton exchange membrane fuel cells (PEMFCs) was investigated at open-circuit voltage conditions. It was found that the location of Pt precipitation is affected by both H-2 and O-2 permeability through the membrane. A simple model is developed that can predict the location of the Pt precipitation band as a function of H-2 and O-2 partial pressure, which agrees well with measurements. The implications of Pt deposition on membrane chemical degradation are briefly discussed. (c) 2007 The Electrochemical Society.
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