Electrochemical Behavior of Monolayer and Bilayer Graphene

被引：131
|
作者：
Valota, Anna T. [1 ]
Kinloch, Ian A. [2 ]
Novoselov, Kostya S. [3 ]
Casiraghi, Cinzia [1 ]
Eckmann, Axel [1 ]
Hill, Ernie W. [4 ]
Dryfe, Robert A. W. [1 ]
机构：
[1] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England
[2] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England
[3] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England
[4] Univ Manchester, Sch Comp Sci, Manchester M13 9PL, Lancs, England
来源：
ACS NANO | 2011年 / 5卷 / 11期
基金：
英国工程与自然科学研究理事会;
关键词：
graphene; electrochemistry; Raman spectroscopy; electron transfer; ELECTRON-TRANSFER; GRAPHITE-ELECTRODES; ORDERED GRAPHITE; REDOX SYSTEM; CAPACITANCE; KINETICS; OXIDE;
D O I：
10.1021/nn202878f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Results of a study on the electrochemical properties of exfoliated single and multilayer graphene flakes are presented. Graphene flakes were deposited on silicon/silicon oxide wafers to enable fast and accurate characterization by optical microscopy and Raman spectroscopy. Conductive silver paint and silver wires were used to fabricate contacts; epoxy resin was employed as a masking coating In order to expose a stable, well-defined area of graphene. Both multilayer and monolayer graphene microelectrodes showed quasi-reversible behavior during voltammetric measurements in potassium ferricyanide. However, the standard heterogeneous charge transfer rate constant, k degrees, was estimated to be higher for monolayer graphene flakes.
引用
收藏
页码：8809 / 8815
页数：7
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