《Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry》 2008年621卷2期
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Colloidal silica has been employed as a support material to disperse Pt and develop Pt-SiO2 composites with electrocatalytic properties. The Pt-SiO2 particles of ratio 1:1 and 2:1 show superior performance towards oxygen reduction...
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Colloidal silica has been employed as a support material to disperse Pt and develop Pt-SiO2 composites with electrocatalytic properties. The Pt-SiO2 particles of ratio 1:1 and 2:1 show superior performance towards oxygen reduction reaction (ORR) as these composite particles form an interconnected particle-network and maximize the available electrochemically active area. Upon increasing the Pt content we observe decreased activity as a result of aggregation of particles. The performance of Pt-SiO2, composite particles in H-2-fuel cell arc compared with Pt-black catalyst. (c) 2007 Elsevier B.V. All rights reserved.
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