Nanoporous PdNi/C Electrocatalyst Prepared by Dealloying High‐Ni‐content PdNi Alloy for Formic Acid Oxidation
Nanoporous PdNi/C Electrocatalyst Prepared by Dealloying High‐Ni‐content PdNi Alloy for Formic Acid Oxidation
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DOI：
10.1002/fuce.201200098
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发表时间：
2012-12
期刊：
影响因子：
2.8
通讯作者：
Wei Wang-;S. Ji;Hui Wang;Rongfang Wang
中科院分区：
文献类型：
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作者：
Wei Wang-;S. Ji;Hui Wang;Rongfang Wang
为了提高钯基甲酸氧化催化剂的电化学性能，将高镍含量的钯镍合金纳米颗粒在酸溶液中脱合金，制备了碳负载的纳米多孔钯镍催化剂。采用X射线衍射、透射电子显微镜和X射线光电子能谱对纳米多孔PdNi/C催化剂的结构进行了表征。电催化结果表明，纳米多孔PdNi/C催化剂的电催化活性高于无孔Pd/C催化剂。结果表明，碳负载的纳米多孔PdNi催化剂在直接甲酸燃料电池中具有应用潜力。
To improve the electrochemical performance of Pd‐based catalysts for formic acid oxidation, a carbon supported nanoporous PdNi catalyst is prepared by dealloying high‐Ni‐content PdNi alloy nanoparticles in acid solution. The structure of nanoporous PdNi/C catalyst is characterized by X‐ray diffraction, transmission electron microscopy and X‐ray photoelectron spectroscopy. The electrocatalytic results show that the activity of the nanoporous PdNi/C catalyst is higher than that of nonporous Pd/C catalyst. The results demonstrate that the carbon‐supported nanoporous PdNi catalyst has a potential for application in direct formic acid fuel cells.