Investigation of the Graphene Supported Platinum-Tungsten Catalysts Prepared by Microwave Synthesis as Electrocatalysts for Borohydride Oxidation

被引：0

作者：

Kilmonis, T. ^{[1
]}

Tamasauskaite-Tamasiunaite, L. ^{[1
]}

Balciunaite, A. ^{[1
]}

Vaiciuniene, J. ^{[1
]}

Norkus, E. ^{[1
]}

机构：

[1] Ctr Phys Sci & Technol, Dept Catalysis, LT-01108 Vilnius, Lithuania

来源：

LOW-TEMPERATURE FUEL CELLS, ELECTROLYZERS, AND REDOX FLOW CELLS | 2015年 / 68卷 / 03期

关键词：

OXYGEN REDUCTION REACTION; PEROXIDE FUEL-CELL; METHANOL OXIDATION; ELECTROCHEMICAL PERFORMANCE; TRANSITION-METALS; PT-CO; NANOPARTICLES; FE; CU; ALLOY;

D O I：

10.1149/06803.0045ecst

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this study a rapid microwave heating method was used to prepare the graphene supported platinum-tungsten catalysts with the different Pt:W molar ratios. The prepared catalysts were characterized by means of Transmission Electron Microscopy and Inductively Coupled Plasma Optical Emission Spectroscopy. The electrocatalytic properties of the PtW/GR catalysts towards the oxidation of borohydride in an alkaline medium were investigated by means of cyclic voltammetry and chrono-techniques. It was found that the graphene supported platinum-tungsten catalysts with the Pt: W molar ratios equal to 1.6:1, 2.4:1 and 7.1:1 were prepared. The synthesized PtW/GR catalysts with the different Pt: W molar ratios show an enhanced electrocatalytic activity towards the oxidation of H-2 generated by catalytic hydrolysis of BH4- and direct oxidation of BH4- comparing with the graphene supported bare W catalyst.

引用

页码：45 / 53

页数：9

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