Electrochemical Behavior of Monolayer and Bilayer Graphene
详细信息 查看全文
- 作者：Anna. T. Valota ; Ian A. Kinloch ; Kostya S. Novoselov ; Cinzia Casiraghi ; Axel Eckmann ; Ernie W. Hill ; Robert A. W. Dryfe
- 刊名：ACS Nano
- 出版年：2011
- 出版时间：November 22, 2011
- 年：2011
- 卷：5
- 期：11
- 页码：8809-8815
- 全文大小：983K
- 年卷期：0
- ISSN：1936-086X
文摘
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°, was estimated to be higher for monolayer graphene flakes.