期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 16, 期 36, 页码 19307-19313出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cp02761b
关键词
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资金
- NSFC [21103010, 21373027, 21325415, 21174019, 51161120361]
Graphene quantum dots (GQDs) have been successfully deposited onto the three-dimensional graphene (3DG) by a benign electrochemical method and the ordered 3DG structure remains intact after the uniform deposition of GQDs. In addition, the capacitive properties of the as-formed GQD-3DG composites are evaluated in symmetrical supercapacitors. It is found that the supercapacitor fabricated from the GQD-3DG composite is highly stable and exhibits a high specific capacitance of 268 F g(-1), representing a more than 90% improvement over that of the supercapacitor made from pure 3DG electrodes (136 F g(-1)). Owing to the convenience of the current method, it can be further used in other well-defined electrode materials, such as carbon nanotubes, carbon aerogels and conjugated polymers to improve the performance of the supercapacitors.
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