One-step Simultaneous Synthesis of Graphene and Pt Nanoparticles under the Action of Pulsed Alternating Current and Electrochemical Performance of Pt/Graphene Catalysts

被引：9

作者：

Kuriganova, Alexandra B. ^{[1
]}

Leontyev, Igor N. ^{[2
]}

Avramenko, Marina V. ^{[2
]}

Popov, Yuri ^{[2
]}

Maslova, Olga A. ^{[3
]}

Koval, Olga Yu. ^{[2
]}

Smirnova, Nina V. ^{[1
]}

机构：

[1] Platov South Russian State Polytech Univ NPI, Ul Prosveshenia 132, Novocherkassk 346428, Russia

[2] Southern Fed Univ, Russia Dept, Ul Zorge 5, Rostov Na Donu 344090, Russia

[3] Univ Fed Minas Gerais, Belo Horizonte, MG, Brazil

来源：

CHEMISTRYSELECT | 2017年 / 2卷 / 24期

基金：

俄罗斯基础研究基金会;

关键词：

electrochemical dispersion; fuel cell; Graphene; platinum; Pt/graphene catalysts; FUEL-CELLS; ELECTROCATALYSTS; SHAPE; REDUCTION; GRAPHITE; OXIDE; SIZE;

D O I：

10.1002/slct.201701186

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pt/graphene electrocatalyst for fuel elements has been obtained via the simultaneously electrochemical dispersion of Pt foil and expanded graphite by applying the alternating current. Raman spectroscopy and transmission electron microscopy (TEM) have revealed multilayered structure of graphene (3-5 layers) with linear defects of graphene sheets near 1 m. The microstructural characteristics and catalytic activity of synthesized Pt/graphene catalyst have been compared with those of Pt/Vulcan catalyst prepared under the same conditions. Pt nanoparticles of Pt/Graphene catalyst exhibit smaller average dimensions and narrower particle size distribution. It follows from the electrochemical study that the electrochemical surface area of Pt/graphene catalyst is 2.5 times higher than for Pt/Vulcan. Besides this, the activity in the electrooxidation of methanol and the stability of Pt/graphene catalyst are found to be superior to the analogous parameters of Pt/Vulcan specimen.

引用

页码：6979 / 6983

页数：5

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