期刊
RSC ADVANCES
卷 4, 期 17, 页码 8466-8471出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra46195e
关键词
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资金
- Jiangsu Provincial Founds for Distinguished Young Scholars [BK20130046]
- NNSF of China [21275076, 61328401]
- Key Project of Chinese Ministry of Education [2012058]
- Research Fund for the Doctoral Program of Higher Education of China [20123223110008]
- State Key Laboratory of Materials-Oriented Chemical Engineering in Nanjing Tech University [KL12-04]
A facile two-step method is developed for large-scale preparation of graphene-based three-dimensional hierarchical sandwich-type architecture (graphene/carbon nanotubes (CNTs)/Mn2O3) for high performance supercapacitor. The synthesis involves a chemical vapor deposition (CVD) method to fabricate sponge-like three-dimensional (3D) graphene/CNTs and an electrodeposition process to deposit Mn2O3 nano-sheets on the surface of 3D graphene/CNTs. With the novel sandwich-type composite as an electrode, the measurements indicate the synergy effects of Mn2O3 and 3D carbonous materials make the electrode present a high specific capacitance. The composite electrode also presents a high reversible capacity, excellent cycle performance and rate capability. It could be concluded that the composite of Mn2O3 with 3D graphene/CNTs displays excellent synergy effects of transition-metal oxide and carbonous materials. This work also inspires in-depth research for the application of 3D graphene-based composites for high performance supercapacitors.
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