Why do you offer different platinum loadings on carbon (for example 20, 30, 40% Pt on Vulcan XC-72)?
The weight of platinum on carbon ultimately influences platinum crystallite size, and ultimately the electrochemical metal surface area per gram of catalyst. Ample studies abound on the effect of platinum crystallite size and electrochemical activity for the E-TEK catalysts. For example, see Proceedings of the Symposium on Oxygen Electrochemistry, Proceedings Volume 95-26, Azdic, Anson, and Kinoshita Editors, 1995, The Electrochemical Society. Also see Genies, Faure, and Durand in “Electrochemical Reduction of Oxygen on Platinum Nanoparticles in Alkaline Media,” Abstract 1078, The Electrochemical Society and The International Society of Electrochemistry Joint Meeting, Paris, 1997, Volume 97-2 Meeting Abstracts of The Electrochemical Society.
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