Effect of voltage on platinum dissolution : Relevance to polymer electrolyte fuel cells
作者： Xiaoping Wang , Romesh Kumar , Deborah J. Myers
DOI: 10.1149/1.2180536
关键词: Electrode 、 Materials science 、 Electrolyte 、 Crystallite 、 Degradation (geology) 、 Inorganic chemistry 、 Polymer 、 Dissolution 、 Cathode 、 Platinum
摘要: One of the processes responsible for performance degradation a polymer electrolyte fuel cell (PEFC) is loss electrochemically active surface area platinum-based electrocatalysts, due in part to platinum dissolution. The long-term dissolution behavior polycrystalline and high-surface-area carbon-supported particles was studied under potentiostatic conditions relevant PEFC cathode conditions. equilibrium concentration dissolved Pt found increase monotonically from 0.65 1.1 V (vs SHE) decrease at potentials >1.1 V. Dissolution rates measured 0.9 were comparable two types electrodes (1.4 1.7 × 10 -14 g/cm 2 s).
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aip.org参考文章(18)
E. Antolini, Formation, microstructural characteristics and stability of carbon supported platinum catalysts for low temperature fuel cells Journal of Materials Science. ,vol. 38, pp. 2995- 3005 ,(2003) , 10.1023/A:1024771618027
U.A. Paulus, T.J. Schmidt, H.A. Gasteiger, R.J. Behm, Oxygen reduction on a high-surface area Pt/Vulcan carbon catalyst: a thin-film rotating ring-disk electrode study Journal of Electroanalytical Chemistry. ,vol. 495, pp. 134- 145 ,(2001) , 10.1016/S0022-0728(00)00407-1
Mahlon S. Wilson, Fernando H. Garzon, Kurt E. Sickafus, Shimshon Gottesfeld, Surface Area Loss of Supported Platinum in Polymer Electrolyte Fuel Cells Journal of The Electrochemical Society. ,vol. 140, pp. 2872- 2877 ,(1993) , 10.1149/1.2220925
C. H. Paik, T. D. Jarvi, W. E. O’Grady, Extent of PEMFC cathode surface oxidation by oxygen and water measured by CV Electrochemical and Solid State Letters. ,vol. 7, ,(2004) , 10.1149/1.1649698
D.C. Johnson, D.T. Napp, S. Bruckenstein, A ring-disk electrode study of the current/potential behaviour of platinum in 1.0 M sulphuric and 0.1 M perchloric acids Electrochimica Acta. ,vol. 15, pp. 1493- 1509 ,(1970) , 10.1016/0013-4686(70)80070-6
K. Kinoshita, J.T. Lundquist, P. Stonehart, Potential cycling effects on platinum electrocatalyst surfaces Journal of Electroanalytical Chemistry. ,vol. 48, pp. 157- 166 ,(1973) , 10.1016/S0022-0728(73)80257-8
D.A.J. Rand, R. Woods, A study of the dissolution of platinum, palladium, rhodium and gold electrodes in 1 m sulphuric acid by cyclic voltammetry Journal of Electroanalytical Chemistry. ,vol. 35, pp. 209- 218 ,(1972) , 10.1016/S0022-0728(72)80308-5
Robert M. Darling, Jeremy P. Meyers, Mathematical Model of Platinum Movement in PEM Fuel Cells Journal of The Electrochemical Society. ,vol. 152, ,(2005) , 10.1149/1.1836156
Zoltán Nagy, Hoydoo You, None, Applications of surface X-ray scattering to electrochemistry problems Electrochimica Acta. ,vol. 47, pp. 3037- 3055 ,(2002) , 10.1016/S0013-4686(02)00223-2
Perminder Bindra, Sidney J. Clouser, Ernest Yeager, Platinum Dissolution in Concentrated Phosphoric Acid Journal of The Electrochemical Society. ,vol. 126, pp. 1631- 1632 ,(1979) , 10.1149/1.2129345