Metal-organic framework-derived carbon coated copper sulfide nanocomposites as a battery-type electrode for electrochemical capacitors

被引:30
作者
Li, Le [1 ,2 ]
Liu, Yunpeng [1 ,2 ]
Han, Yinghui [1 ,3 ]
Qi, Xiaohan [1 ,2 ]
Li, Xue [1 ,2 ]
Fan, Hui [4 ]
Meng, Liang [4 ]
机构
[1] North China Elect Power Univ, Hebei Key Lab Distributed Energy Storage & Microg, Baoding 071003, Peoples R China
[2] North China Elect Power Univ, Dept Elect Engn, Baoding 071003, Peoples R China
[3] North China Elect Power Univ, Sch Math & Phys, Baoding 071003, Peoples R China
[4] Hebei Elect Power Res Inst, Shijiazhuang 050022, Hebei, Peoples R China
关键词
Copper sulfides; Metal-organic framework; Supercapacitor; Nanocomposites; Energy storage and conversion; NANOSHEET ARRAY; NI FOAM; PERFORMANCE; MECHANISM;
D O I
10.1016/j.matlet.2018.10.093
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Metal-organic framework (MOF)-derived carbon-coated metal sulfides are a popular research area for energy storage, owing to their highly reactive nature and universal electrochemical activity. A simple and efficient method for the preparation of carbon-coated copper sulfide via a calcining-hydrothermal process using an MOF template is presented in this paper. The transmission electron microscope (TEM) imaging indicates that the cobble-like Cu7S4 nanopolyhedra are similar to 100 nm in size, and are interconnected by amorphous carbon. Electrochemical analysis shows that the Cu7S4/C electrode possesses the highest capacitance, 321.9Fg(-)(1)(80.5 mAh g(-1) in capacity), at a current density of 0.5 A g(-1), and achieves nearly 78.1% capacitance retention after 3000 cycles, suggesting its holds promise for application in battery-type electrode materials for supercapacitors. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:131 / 134
页数:4
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