Structural Correlations in Heterogeneous Electron Transfer at Monolayer and Multilayer Graphene Electrodes
Structural Correlations in Heterogeneous Electron Transfer at Monolayer and Multilayer Graphene Electrodes
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DOI：
10.1021/ja3014902
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发表时间：
2012-05-02
影响因子：
15
通讯作者：
Unwin, Patrick R.
中科院分区：
文献类型：
--
作者：
Gueell, Aleix G.;Ebejer, Neil;Unwin, Patrick R.
石墨烯作为一种新型的碳材料，作为一种具有广泛应用前景的电极材料，正引起人们的极大兴趣。在本研究中，使用扫描电化学电池显微镜（SECCM），它允许电化学电流以高空间分辨率映射在整个表面的石墨烯表面的相关性与相应的结构和性能的异质电子转移（ET）的活动进行了研究。我们建立了在石墨烯的异质ET的速率系统地增加与石墨烯层的数量，并表明，在多层堆叠也有一个微妙的影响ET动力学。
As a new form of carbon, graphene is attracting intense interest as an electrode material with widespread applications. In the present study, the heterogeneous electron transfer (ET) activity of graphene is investigated using scanning electrochemical cell microscopy (SECCM), which allows electrochemical currents to be mapped at high spatial resolution across a surface for correlation with the corresponding structure and properties of the graphene surface. We establish that the rate of heterogeneous ET at graphene increases systematically with the number of graphene layers, and show that the stacking in multilayers also has a subtle influence on ET kinetics.