Performance of carbon nanofiber supported Pd-Ni catalysts for electro-oxidation of ethanol in alkaline medium

被引:188
作者
Maiyalagan, T. [1 ]
Scott, Keith [1 ]
机构
[1] Newcastle Univ, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
基金
英国工程与自然科学研究理事会;
关键词
Ethanol electro-oxidation; Pd-Ni; Nanostructured materials; Electro-catalyst; Fuel cell; FUEL-CELL APPLICATIONS; METHANOL OXIDATION; ELECTROCHEMICAL OXIDATION; NICKEL NANOPARTICLES; ALCOHOL OXIDATION; PLATINUM; ELECTROCATALYST; ELECTRODES; NANOTUBES; PALLADIUM;
D O I
10.1016/j.jpowsour.2010.03.022
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
Carbon nanofibers (CNF) supported Pd-Ni nanoparticles have been prepared by chemical reduction with NaBH4 as a reducing agent. The Pd-Ni/CNF catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and electrochemical voltammetry analysis. TEM showed that the Pd-Ni particles were quite uniformly distributed on the surface of the carbon nanofiber with an average particle size of 4.0 nm. The electro-catalytic activity of the Pd-Ni/CNF for oxidation of ethanol was examined by cyclic voltammetry (CV). The onset potential was 200 mV lower and the peak current density four times higher for ethanol oxidation for Pd-Ni/CNF compared to that for Pd/C. The effect of an increase in temperature from 20 to 60 degrees C had a great effect on increasing the ethanol oxidation activity. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:5246 / 5251
页数:6
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