| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 220445 | Journal of Electroanalytical Chemistry | 2008 | 7 Pages |
Abstract
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 H2-fuel cell are compared with Pt-black catalyst.
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Chemical Engineering
Chemical Engineering (General)
Authors
Brian Seger, Anusorn Kongkanand, K. Vinodgopal, Prashant V. Kamat,