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Preparation of Low Loading Pt/C Catalyst by Carbon Xerogel Method for Ethanol Electrooxidation |
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| Authors: | Dong-Yun Zhang Zi-Feng Ma Guoxiu Wang Jun Chen Gorden C Wallace Hua-Kun Liu |
| Affiliation: | (1) Department of Chemical Engineering, Shanghai Jiaotong University, Shanghai, 200240, P.R. China;(2) ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW, 2522, Australia;(3) ISEM, University of Wollongong, Wollongong, NSW, 2522, Australia |
| Abstract: | Low platium loading Pt/C catalyst was prepared by direct Pt-embedded carbon xerogel method. The Pt content of the as-prepared Pt/C is about 4.32 wt% and has a typical polycrystalline phase. Textural and structural characteristics of the catalysts were characterized by XRD, EDS and BET. Pt-embedded in carbon xerogel increases the specific surface area and pore volume of the X-Pt/C during carbon gelation and the carbonization process. Electrochemical characteristics of the catalysts for ethanol electrooxidation were measured. The results indicated that the as-prepared 4.32 wt% Pt/C has higher mass current density in ethanol electrooxidation as compared to the 20 wt% Pt/C. This may be due to the high roughness of the Pt surface that is formed during the carbon gelation and carbonization process. |
| Keywords: | Pt/C catalyst Carbon xerogel Ethanol electrooxidation Fuel cell |
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