Nanostructured Ternary Nanocomposite of rGO/CNTs/MnO2 for High-Rate Supercapacitors

被引：109

作者：

Jiang, Hao ^{[1
]}

Dai, Yihui ^{[1
]}

Hu, Yanjie ^{[1
]}

Chen, Weina ^{[1
]}

Li, Chunzhong ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2014年 / 2卷 / 01期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Reduced graphene oxide; Carbon nanotubes; MnO2; Nanocomposite; Supercapacitor; MNO2; NANOSTRUCTURES; ENERGY-STORAGE; COMPOSITES; ELECTRODE;

D O I：

10.1021/sc400313y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：70 / 74

页数：5

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