INVESTIGATION OF THE ELECTROCHEMICAL BEHAVIOR OF HEAT-TREATED CARBON BLACKS AND Pt/C CATALYSTS

C. D. Huang, Z. T. Xiong, J. Y. Lin () and K. L. Tan
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C. D. Huang: Department of Physics, National University of Singapore, Kent Ridge, Singapore 119260, Singapore
Z. T. Xiong: Department of Physics, National University of Singapore, Kent Ridge, Singapore 119260, Singapore
J. Y. Lin: Department of Physics, National University of Singapore, Kent Ridge, Singapore 119260, Singapore
K. L. Tan: Department of Physics, National University of Singapore, Kent Ridge, Singapore 119260, Singapore

Surface Review and Letters (SRL), 2002, vol. 09, issue 03n04, 1443-1452

Abstract: In this paper we report the electrochemical behavior of heat-treated carbon blacks and Pt/C catalysts. Cyclic voltammetry indicates that the heat-treated carbon black as catalyst support does not improve the Pt/C catalyst's activity for methanol oxidation. An XPS study of a Pt-loaded carbon black indicates that the amounts of oxidized platinum and oxygen-functional groups on catalysts are decreased when the platinum particles are deposited on the heat-treated carbon surface. These changes in the surface and crystalline structural properties of carbon materials lead to the catalytic activity change in methanol electro-oxidation.

Keywords: Heat treatment; methanol oxidation; cyclic voltammogram; fuel cell; carbon-supported Pt catalyst; XPS TEM (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1142/S0218625X02004001

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