Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 23, Pages 12396-12403Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta01330e
Keywords
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Funding
- National Natural Science Foundation of China [51105108]
- Fundamental Research Funds for the Central Universities, China [HIT. NSRIF. 2010113]
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A high-performance supercapacitor was successfully developed using graphene-based 3D hybrid nanostructured electrodes. The 3D hybrid nanostructure, consisting of vertically oriented few-layer graphene (VFG) grown on an alveolate Pt film with high-density nanocups, was synthesized by a simple and efficient one-step method. The 3D VFG-nanocup hybrid structured electrodes showed a high specific surface area for ion transmission and storage, which contributes to the enhancement of areal capacitance by accommodating more charges in a given footprint area than that of conventional plane-structured electrodes. Electrochemistry results indicate that the 3D VFG-nanocup hybrid structured electrodes exhibit a high specific capacitance up to 1052 mu F cm(-2) (three times that of the VFG-plane, at approximately 337 mu F cm(-2)), and a good cycling stability with about 93% capacitance retention after 3000 cycles. These easily fabricated, high-performance 3D hybrid nanostructured electrodes offer great promise in energy storage device applications.
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