Nickel as a catalyst for the electro-oxidation of methanol in alkaline medium

被引：519

作者：

Rahim, MAA ^{[1
]}

Hameed, RMA ^{[1
]}

Khalil, MW ^{[1
]}

机构：

[1] Cairo Univ, Fac Sci, Dept Chem, Giza, Egypt

来源：

JOURNAL OF POWER SOURCES | 2004年 / 134卷 / 02期

关键词：

nickel catalyst; electro-catalysis; methanol fuel cell;

D O I：

10.1016/j.jpowsour.2004.02.034

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：

The use of Ni as a catalyst for the electro-oxidation of methanol in alkaline medium was studied by cyclic voltammetry. It was found that only Ni dispersed on graphite shows a catalytic activity towards methanol oxidation but massive Ni does not. Ni was dispersed on graphite by the electro-deposition from acidic NiSO4 Solution using potentiostatic and galvanostatic techniques. The catalytic activity of the C/Ni electrodes towards methanol oxidation was found to vary with the amount of electro-deposited Ni. The dependence of the oxidation current on methanol concentration and scan rate was discussed. It was concluded from the electro-chemical measurements and SENT analysis that methanol oxidation starts as Ni-oxide is formed on the electrode surface. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：160 / 169

页数：10

共 49 条

[1] NITRITE-SELECTIVE ELECTRODE BASED ON AN ELECTROPOLYMERIZED COBALT PHTHALOCYANINE [J].