Copper@palladium-copper core-shell nanospheres as a highly effective electrocatalyst for ethanol electro-oxidation in alkaline media

JOURNAL OF POWER SOURCES

卷:270

Article

Cai, Jindi¹  Zeng, Yanzhen¹  Guo, Yonglang¹ 

[1] Fuzhou Univ, Coll Chem, Fuzhou 350116, Peoples R China

关键词: Alkaline media;    Core-shell structure;    Ethanol oxidation;    Palladium-based catalyst;    Palladium-Copper;   

DOI  :  10.1016/j.jpowsour.2014.07.131

来源: Elsevier

【 摘 要 】

A novel Cu@PdCu/C catalyst with the core shell structure is prepared by the galvanic replacement between Pd2+ ions and Cu particles. It is characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), energy-dispersive X-ray spectra (EDX) and electrochemical measurements. The Cu@PdCu nanoparticles are composed of the Cu core and PdCu alloying shell with a thickness of ca. 0.5 nm. The peak current density of ethanol oxidation on Cu@PdCu/C is 166.0 mA cm(-2), which is 2.78 times higher than that on Pd/C catalyst (59.8 mA cm(-2)). Durability and poisoning tolerance of this catalyst are also greatly improved. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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