Electrochemical behavior of monolayer and bilayer graphene.
Electrochemical behavior of monolayer and bilayer graphene.
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DOI：
10.1021/nn202878f
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发表时间：
2011-10
期刊：
影响因子：
17.1
通讯作者：
A. T. Valota;I. Kinloch;K. Novoselov;C. Casiraghi;A. Eckmann;E. Hill;R. Dryfe
中科院分区：
文献类型：
--
作者：
A. T. Valota;I. Kinloch;K. Novoselov;C. Casiraghi;A. Eckmann;E. Hill;R. Dryfe
剥离的单层和多层石墨烯片的电化学性能的研究结果。将石墨烯薄片沉积在硅/氧化硅晶片上，以通过光学显微镜和拉曼光谱进行快速和准确的表征。导电银漆和银线用于制造接触;环氧树脂用作掩蔽涂层，以便暴露稳定的、明确限定的石墨烯区域。多层和单层石墨烯微电极在铁氰化钾的伏安测量过程中表现出准可逆行为。然而，估计单层石墨烯薄片的标准非均相电荷转移速率常数k°更高。
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.