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The edge- and basal-plane-specific electrochemistry of a single-layer graphene sheet
Open accessAbstract
Graphene has a unique atom-thick two-dimensional structure and excellent properties, making it attractive for a variety of electrochemical applications, including electrosynthesis, electrochemical sensors or electrocatalysis, and energy conversion and storage. However, the electrochemistry of single-layer graphene has not yet been well understood, possibly due to the technical difficulties in handling individual graphene sheet. Here, we report the electrochemical behavior at single-layer graphene-based electrodes, comparing the basal plane of graphene to its edge. The graphene edge showed 4 orders of magnitude higher specific capacitance, much faster electron transfer rate and stronger electrocatalytic activity than those of graphene basal plane. A convergent diffusion effect was observed at the sub-nanometer thick graphene edge-electrode to accelerate the electrochemical reactions. Coupling with the high conductivity of a high-quality graphene basal plane, graphene edge is an ideal electrode for electrocatalysis and for the storage of capacitive charges.
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Metadata
- Authors
- Yuan, W., Zhou, Y., Li, Y., Li, C., Peng, H., Zhang, J., Liu, Z., Dai, L., & Shi, G.
- Venue
- Scientific Reports
- Published
- 2013-07-30
- Volume
- 3
- Issue
- 1
- Pages
- 2248-2248
- ISSN
- 2045-2322 (ISSN-L)
- OpenAlex
- W1967276707
- Cited by
- 527
- References
- 33
- FWCI
- 20.43
- Type
- journal article
- Language
- en
- Open access
- gold
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