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Direct chemical deposition of platinum on ionic conductive membranes and evaluation of the electrocatalytic activity
Institution:1. UMR 6503, CNRS – Université de Poitiers, Equipe Electrocatalyse, 40 Avenue du Recteur Pineau, 86022 Poitiers Cedex, France;2. Groupe de Recherche sur l’Energétique des Milieux Ionisés, UMR 6606 Université d’Orléans – CNRS Polytech’Orléans BP6744, F-45067 Orléans Cedex 2, France;1. Department of Application Chemistry of School of Chemical Engineering, Hefei University of Technology, Hefei 230009, PR China;2. Anhui Key Laboratory of Controllable Chemistry Reaction & Material Chemical Engineering, Hefei, PR China;3. Colloge of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, P. R. China;1. Semiconductor & Energy Conversion - Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum, 44780 Bochum, Germany;2. Electrochemical Materials Science Laboratory, Universitá degli Studi di Palermo, 90128 Palermo, Italy;3. Department of Materials Engineering, Isfahan University of Technology, 84156 Isfahan, Iran;1. Central Mining Institute, Department of Energy Saving and Air Protection, Pl. Gwarków 1, 40-166 Katowice, Poland;2. Central Mining Institute, Department of Post-Industrial Sites and Waste Management, Pl. Gwarków 1, 40-166 Katowice, Poland
Abstract:Direct chemical deposition of platinum at different polymer electrolyte membranes for a fuel cell application was studied. The developed method allows depositing platinum on acid and alkaline membranes. The depositions realized under different experimental conditions were characterized by RBS (Rutherford backscattering spectroscopy) and TEM (transmission electron microscopy) to determine the depth profile in the membranes and the mean size of platinum particles. The active surface area of the catalysts and the related particle size were characterized by cyclic voltammetry. Results indicated that a part of platinum was deposited inside the membrane. Roughness as high as 500 could however be achieved. Oxygen reduction reaction under working conditions close to those of a fuel cell cathode was studied to draw some kinetic data.
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