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Citation: Li Li, Wang Heng-Xiu, Xu Bo-Qing, Li Jin-Lu, Xing Wei, Mao Zong-Qiang. Studies on PEMFC Electrocatalysts: Physicochemical Characterization of Homemade Pt/C Electrocatalyst[J]. Acta Physico-Chimica Sinica, ;2003, 19(04): 342-346. doi: 10.3866/PKU.WHXB20030413 shu

Studies on PEMFC Electrocatalysts: Physicochemical Characterization of Homemade Pt/C Electrocatalyst

1.
State Key Laboratory of C1 Chemistry and Technology, Department of Chemistry, Tsinghua University, Beijing 100084;Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;Institute of Nuclear Energy Technology, Tsinghua University, Beijing　100084

Received Date: 29 August 2002
Available Online: 15 April 2003

A homemade Pt/C electrocatalyst(named as THYT-1) for proton-exchange membrane fuel cell(PEMFC) was prepared and characterized comprehensively. Single-cell measurements showed that the performance of THYT-1 for hydrogen electro-oxidation was superior to that of the E-TEK Pt/C catalyst. Cyclic voltammetry measurements in a half PEM fuel cell indicated that the electro-oxidation behavior of adsorbed CO on THYT-1 and the E-TEK Pt/C catalyst was indistinguishable. XPS and XRD detections showed that platinum of the two catalysts exist mainly in the metallic state. Uniformly dispersed Pt-particles with sizes of 2～3 nm were found to be the dominant images of Pt in the TEM micrographs for both THYT-1 and the E-TEK catalysts. Application of THYT-1 catalyst in the research and development of PEMFC technology can be expected.
- Proton-exchange membrane fuel cell;Electrocatalyst;Pt/C;CO electro-oxidation;Nano-Pt catalyst
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