Electrocatalytic oxidation of formic acid on functional MWCNTs supported nanostructured Pd–Au catalyst
Electrocatalytic oxidation of formic acid on functional MWCNTs supported nanostructured Pd–Au catalyst
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DOI：
10.1016/j.elecom.2009.10.001
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发表时间：
2009-11
影响因子：
5.4
通讯作者：
Shu-xian Zhang;Ming Qing;Hui Zhang;Yanni Tian
中科院分区：
文献类型：
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作者：
Shu-xian Zhang;Ming Qing;Hui Zhang;Yanni Tian
本文以功能化多壁碳纳米管（f-MWCNTs）为载体，制备了不同Pd/Au质量比的Pd/Au纳米催化剂，并研究了其对甲酸氧化的电催化活性。采用X射线衍射（XRD）和透射电子显微镜（TEM）对催化剂进行了表征。电化学测试结果表明，4Pd 1Au/f-MWCNTs催化剂对甲酸的电氧化活性和稳定性明显高于Pd/f-MWCNTs催化剂。纳米金的存在有可能改善直接甲酸燃料电池（DFAFC）中钯基电催化剂的性能。
In this work, PdAu nanocatalysts with different weight ratio of Pd and Au supported on functional multi-walled carbon nanotubes (f-MWCNTs) were prepared, and their electrocatalytic activity for the oxidation of formic acid was also studied. The electrocatalysts were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The electrochemical results showed that the 4Pd1Au/f-MWCNTs (by weight) catalyst, exhibited distinctly higher activity and better stability in formic acid electrooxidation than the Pd/f-MWCNTs catalyst. The Nano-Au improves potentially the performance of Pd-based electrocatalysts for the direct formic acid fuel cells (DFAFCs).