Hollow Carbon Microspheres/MnO2 Nanosheets Composites: Hydrothermal Synthesis and Electrochemical Behaviors

被引：25

作者：

Fan, Hui-Ii ^{[1
]}

Ran, Fen ^{[2
]}

Zhang, Xuan-xuan ^{[1
]}

Song, Hai-ming ^{[1
]}

Niu, Xiao-qin ^{[1
]}

Kong, Ling-bin ^{[2
]}

Kang, Long ^{[2
]}

机构：

[1] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China

[2] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China

来源：

NANO-MICRO LETTERS | 2015年 / 7卷 / 01期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Manganese oxide; Hollow carbon microspheres; Composite electrode; Supercapacitor; SUPERCAPACITOR ELECTRODE; MANGANESE-DIOXIDE; NANOPARTICLES; GRAPHENE; MNO2; PERFORMANCE; FABRICATION; NANOTUBES; SURFACE;

D O I：

10.1007/s40820-014-0019-z

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This article reported the electrochemical behaviors of a novel hollow carbon microspheres/manganese dioxide nanosheets (micro-HC/nano-MnO2) composite prepared by an in situ self-limiting deposition method under hydrothermal condition. The results of scanning electron microscopy reveal that MnO2 nanosheets homogeneously grow onto the surface of micro-HC to form a loose-packed microstructure. The quantity of MnO2 required in the electrode layer has thereby been reduced significantly, and higher specific capacitances have been achieved. The micro-HC/nano-MnO2 electrode presents a high capacitance of 239.0 F g(-1) at a current density of 5 mA cm(-2), which is a strong promise for high-rate electrochemical capacitive energy storage applications.

引用

页码：59 / 67

页数：9

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