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：
中国博士后科学基金; 中国国家自然科学基金;
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
收藏
页码：59 / 67
页数：9
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