期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 2, 期 1, 页码 70-74出版社
AMER CHEMICAL SOC
DOI: 10.1021/sc400313y
关键词
Reduced graphene oxide; Carbon nanotubes; MnO2; Nanocomposite; Supercapacitor
资金
- National Natural Science Foundation of China [21206043, 21236003]
- Basic Research Program of Shanghai [11JC1403000, 13JC1401900]
- Special Research Fund for the Docoral Program of Higher Education of China [20110074110010, 20120074120004]
- Program for New Century Excellent Talents in University [NCET-110641]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Shanghai Pujiang Program [12PJ1401900]
- Fundamental Research Funds for the Central Universities
- Directorate For Engineering [1245302] Funding Source: National Science Foundation
A three-dimensional (3D) nanostructure comprised of ternary rGO/CNTs/MnO2 nanocomposites was successfully developed and prepared for high-rate supercapacitors. The optimized nanocomposite exhibited a high specific capacitance (SC) of 319 F g(-1) with enhanced rate capability (222 F g(-1) even at 60 A g(-1)) and cycling stability (85.4% retention of original capacity after cycling for 3000 times) in a 1 M Na2SO4 aqueous solution. Such outstanding capacitive behaviors are mainly attributed to smart nanostructures, which possess several advantages as supercapacitor electrodes, such as easy access pseudoactive pecies with high utilization and fast ion/electron transfer and also a strong interaction between the 3D rGO/CNTs carbon matrix and pseudoactive.MnO2 nanoflakes. It is concluded that the present 3D rGO/CNTs/MnO2 nanocomposites can serve as promising electrode materials for advanced supercapacitors.
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