The Oxidation Resistance of Tungsten Carbide as Catalyst Support for Proton Exchange Membrane Fuel Cells

Chinese Journal of Catalysis ›› 2007, Vol. 28 ›› Issue (2): 109-111.

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The Oxidation Resistance of Tungsten Carbide as Catalyst Support for Proton Exchange Membrane Fuel Cells

ZHANG Shengsheng1,2, ZHU Hong1,2*, YU Hongmei2, HOU Junbo2, YI Baolian2, MING Pingwen2

1 School of Science, Beijing Jiao Tong University, Beijing 100044, China; 2 Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China

Received:2007-02-25 Online:2007-02-25 Published:2011-01-28

Abstract

Abstract: Electrochemical oxidation of carbon supports for Pt/C catalysts can cause degradation of proton exchange membrane fuel cells (PEMFCs). To improve the oxidation resistance of the catalyst supports, tungsten carbide (WxCy) was investigated as a substitute for carbon supports in PEMFCs. The Pt/C and Pt/WxCy samples were oxidized using the chronoamperometry method. The electrochemical active area of the two samples was measured using cyclic voltammetry. Furthermore, the Pt/C and Pt/WxCy catalysts were applied to single cells to compare their performance degradation after oxidation. As a result, the single cell prepared with Pt/WxCy catalyst showed higher oxidation resistance than the contrastive cell prepared with Pt/C catalyst.

Key words: tungsten carbide, carbon, catalyst support, platinum, fuel cell, oxidation resistance

ZHANG Shengsheng1,2, ZHU Hong1,2*, YU Hongmei2, HOU Junbo2, YI Baolian2, MING Pingwen2. The Oxidation Resistance of Tungsten Carbide as Catalyst Support for Proton Exchange Membrane Fuel Cells[J]. Chinese Journal of Catalysis, 2007, 28(2): 109-111.

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The Oxidation Resistance of Tungsten Carbide as Catalyst Support for Proton Exchange Membrane Fuel Cells

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