Carbon Aerogel -Supported Pt with Applications in Fuel-Cells

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Carbon–supported Pt materials still remain as reference electrocatalysts for the reactions in fuel cells [1]. Related to cost–performances carbon aerogel-supported Pt joins the catalytic properties of the Pt with attractive structural properties of the aerogels, such as low mass densities, high surface area, continuous porosity [2-4]. Mesoporous carbon aerogels were obtained by using sol-gel method followed by supercritical drying and nitrogen atmosphere pyrolysis. The carbon aerogel-supported Pt catalysts were prepared by a borohydride reduction method. The morpho-structural and electrochemical characteristics, as well as the catalytic activity for oxygen reduction of the carbon aerogel-supported Pt catalysts, in comparison with carbon black- and multi-wall carbon nanotube-supported Pt, were evaluated. Our results show that carbon aerogel support reduces catalyst loading through improving the catalyst activity performance. References [1] Z. Liu, Xing Y. Ling, X. Sua, J. Y. Lee., L. M. Gan, Journal of Power Sources 149 (2005) 1–7 [2] R.W. Pekala, J. Mater. Sci. 24 (1989) 3221–3226 [3] R. Saliger, U. Fischer, C. Herta, J. Fricke, J. Non-Cryst. Solids 225 (1998) 81–85 [4]. L.C. Cotet, M. Baia, L. Baia, I.C. Popescu, V. Cosoveanu, E. Indrea, J. Popp, V. Danciu, J. Alloys & Compounds 434–435 (2007) 854–857

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Journal: TechConnect Briefs
Volume: Technical Proceedings of the 2008 Clean Technology Conference and Trade Show
Published: June 1, 2008
Pages: 310 - 312
Industry sector: Energy & Sustainability
Topics: Fuel cells & Hydrogen
ISBN: 1-4200-8502-0