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中文摘要：
采用还原碳化法制备了碳化钨样品，并用原位还原法担载Pt粒子得到Pt／WxCy催化剂．利用计时电流技术对Pt／WxCy和常规Pt／C催化剂进行氧化处理，并用循环伏安法测试了氧化前后两种催化剂的电化学活性面积．将两种催化剂制成单电池，对比研究了其氧化后的性能衰减．结果表明，Pt／WxCy催化剂制成的单电池抗氧化能力显著高于普通Pt／C制成的单电池．
英文摘要：
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.
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