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

被引：83

作者：

Cai, Jindi ^{[1
]}

Zeng, Yanzhen ^{[1
]}

Guo, Yonglang ^{[1
]}

机构：

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

来源：

JOURNAL OF POWER SOURCES | 2014年 / 270卷

基金：

中国国家自然科学基金;

关键词：

Alkaline media; Core-shell structure; Ethanol oxidation; Palladium-based catalyst; Palladium-Copper; FORMIC-ACID ELECTROOXIDATION; FUEL-CELLS; METHANOL ELECTROOXIDATION; CATALYTIC-ACTIVITY; CARBON NANOTUBES; NANOPARTICLES; ADSORPTION;

D O I：

10.1016/j.jpowsour.2014.07.131

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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.

引用

页码：257 / 261

页数：5

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