Enhanced activity of molybdovanadophosphoric acid modified Pt electrode for the electrooxidation of methanol

被引：29
|
作者：
Feng, Ligang [1 ]
Lv, Qing [1 ]
Sun, Xiujuan [1 ]
Yao, Shikui [1 ]
Liu, Changpeng [1 ]
Xing, Wei [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Lab Adv Power Sources,Grad Sch, Changchun 130022, Jilin, Peoples R China
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2012年 / 664卷
基金：
中国国家自然科学基金;
关键词：
Fuel cell; Methanol electrooxidation; Molybdovanadophosphoric acid; Pt electrode; PEM FUEL-CELLS; PT/C ELECTROCATALYSTS; CARBON NANOTUBES; OXIDATION; PLATINUM; CATALYSTS; CO; NANOPARTICLES; POLYCRYSTALLINE; VOLTAMMETRY;
D O I：
10.1016/j.jelechem.2011.10.006
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The Keggin-structure molybdovanadophosphoric acid (H3+xPMo12-xVxO40, x = 1, 2, 3, denoted as PMV) modified Pt electrode was studied by electrochemical measurements for methanol oxidation. It was discovered that both the catalytic activity and stability of the PMV modified Pt electrode were significantly enhanced. With the increase of the vanadium content in PMV, the catalytic activity and stability for methanol electrooxidation were also increased. The enhancements were attributed to the special properties of PMV, which increased the electron transfer coefficient of the rate-determining step. Therefore, the PMV has potential application as promoter for methanol electrooxidation in direct methanol fuel cell. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：14 / 19
页数：6
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