摘要
A simple approach was developed to synthesize the three-dimensional (3D) hybrid of manganese dioxide (MnO 2) and graphene foam. The morphology of the MnO 2 nanostructures can be readily controlled by the solution acidity. Furthermore, we demonstrate that, serving as a free-standing supercapacitor electrode, this novel three-dimensional hybrid gives a remarkable specific capacitance (560 F/g at the current density of 0.2 A/g) and excellent cycling stability.
源语言 | 英语 |
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页(从-至) | 4865-4870 |
页数 | 6 |
期刊 | Carbon |
卷 | 50 |
期 | 13 |
DOI | |
出版状态 | 已出版 - 11月 2012 |
已对外发布 | 是 |