MnO2 nanowires-decorated carbon fiber cloth as electrodes for aqueous asymmetric supercapacitor

被引:21
作者
Hong, Congcong [1 ]
Wang, Xing [1 ]
Yu, Houlin [1 ]
Wu, Huaping [2 ]
Wang, Jianshan [3 ]
Liu, Aiping [1 ,4 ]
机构
[1] Zhejiang Sci Tech Univ, Ctr Optoelect Mat & Devices, Hangzhou 310018, Zhejiang, Peoples R China
[2] Zhejiang Univ Technol, Minist Educ & Zhejiang Prov, Lab E&M, Hangzhou 310014, Zhejiang, Peoples R China
[3] Tianjin Univ, Dept Mech, Tianjin Key Lab Modern Engn Mech, Tianjin 300072, Peoples R China
[4] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
基金
中国国家自然科学基金;
关键词
MnO2; nanowires; carbon fiber cloth; supercapacitor; energy density; power density; HIGH-PERFORMANCE SUPERCAPACITORS; FACILE SYNTHESIS; ENERGY-STORAGE; NICKEL FOAM; ARRAYS; NANOSHEETS;
D O I
10.1142/S1793604718500340
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Manganese dioxide nanowires (MnO2 NWs) anchored on carbon fiber cloth (CFC) were fabricated through a simple hydrothermal reaction and used as integrated electrodes for supercapacitor. The morphology-dependent electrochemical performance of MnO2 NWs was confirmed, yielding good capacitance performance with a high specific capacitance of 3.88 F . cm(-2) at a charge discharge current density of 5 mA . cm(-2) and excellent stability of 91.5% capacitance retention after 3000 cycles. Moreover, the composite electrodes were used to fabricate supercapacitors, which showed a high specific capacitance of 194 mF . cm(-2) at a charge-discharge current density of 2 mA . cm(-2) and high energy density of 0.108 mWh . cm(-2) at power density of 2 mW . cm(-2), foreboding its potential application for high-performance supercapacitor.
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页数:5
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