Effect of support on the activity of Pd electrocatalyst for ethanol oxidation
Effect of support on the activity of Pd electrocatalyst for ethanol oxidation
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DOI：
10.1016/j.jpowsour.2006.09.062
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发表时间：
2006-12
影响因子：
9.2
通讯作者：
Haibing Zheng;Yongliang Li;Shuixia Chen;P. Shen
中科院分区：
文献类型：
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作者：
Haibing Zheng;Yongliang Li;Shuixia Chen;P. Shen
采用间歇式微波加热（IMH）技术制备了不同类型的碳材料，包括多壁碳纳米管（MWCNT）、炭黑和活性碳纤维（ACF），并将Pd纳米粒子负载到这些碳材料上。采用不同的电化学技术表征了Pd基电催化剂对乙醇氧化的催化活性，并与Pt/C电催化剂进行了比较。在碱性介质中，多壁碳纳米管负载钯（Pd/MWCNT）电催化剂对乙醇的氧化性能最好。乙醇氧化的起始电位在Pd/MWCNT上比Pt/C上负移了100 mV以上。结果表明，载体对Pd基催化剂的乙醇氧化活性有显著影响。
Pd nanoparticles were supported on different types of the carbon materials including multiwall carbon nanotube (MWCNT), carbon black and activated carbon fiber (ACF) prepared by the intermittent microwave heating (IMH) technique. Different electrochemical techniques were employed to characterize the catalytic activities of the Pd-based electrocatalysts for ethanol oxidation in comparison with the Pt/C electrocatalyst. Pd supported on multiwall carbon nanotube (Pd/MWCNT) electrocatalyst showed the best performance for ethanol oxidation in alkaline media. An over 100mV negative shift of the onset potential for ethanol oxidation was found on Pd/MWCNT compared to that on Pt/C. The results indicated that the support would significantly influence the catalytic activities of the Pd-based electrocatalysts for ethanol oxidation.