The Stability of PEMFC Electrodes Platinum Dissolution vs Potential and Temperature Investigated by Quartz Crystal Microbalance
作者： V. A. T. Dam , F. A. de Bruijn
DOI: 10.1149/1.2714327
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摘要: The stability of platinum in proton exchange membrane fuel cell (PEMFC) electrodes has been investigated by determining the dissolution from a thin film deposited on gold substrate 1 M HClO4 at different temperatures ranging between 40 and 80°C potentials 0.85 1.4 V vs reversible hydrogen electrode (RHE). loss Pt during process is monitored situ with highly sensitive quartz crystal microbalance. By combining microbalance electrochemical cell, dynamic change weight can be observed situ. It shown that first an oxide layer formed, which dissolved depending temperature potential. rate found to strongly dependent potential temperature. At close 1.15 RHE, becomes saturated due protection passivating surface high 80°C, starts diminish when higher than V.
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