Ethylene glycol electrooxidation on core-shell PdCuBi nanoparticles fabricated via substitution and self-adsorption processes
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- 作者：Yiyin Huang ; Yonglang Guo ; Yaobing Wang
- 关键词：Alkaline medium ; Core&ndash ; shell structure ; Ethylene glycol oxidation ; Palladium
- 刊名：Journal of Power Sources
- 出版年：1 March, 2014
- 年：2014
- 卷：249
- 期：Complete
- 页码：9-12
- 全文大小：1322 K
文摘
Partial substitution of Cu by Pd2+ ions and Bi3+ ion self-adsorption processes are used to fabricate a novel core-shell PdCuBi nanocatalyst. X-ray diffraction, transmission electron microscope, energy-dispersive X-ray spectra and different electrochemical measurements are used to characterize the catalyst. It is exhibited that Pd covers Cu outer layers in the substitution reaction and Bi modifies Pd surface in the adsorption process. The peak current for ethylene glycol electrooxidation of PdCuBi/C (171.1聽mA聽cm鈭?) in a KOH solution is almost three times higher than that of Pd/C (57.8聽mA聽cm鈭?). Durability and tolerance towards strongly adsorbed intermediate poisoning of this catalyst are also improved.