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Citation: Guo Jixi, Song Xianli, Guo Mingxi, Jia Dianzeng, Tong Fenglian. Preparation of MnO2/CBCNFs Composite Materials and Its Electrochemical Performance for Flexible Supercapacitor[J]. Chemistry, ;2016, 79(10): 942-946,951. shu

Preparation of MnO2/CBCNFs Composite Materials and Its Electrochemical Performance for Flexible Supercapacitor

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    Key Laboratory of Energy Materials Chemistry, Ministry of Education;Key Laboratory of Advanced Functional Materials, Autonomous Region;Institute of Applied Chemistry, Xinjiang University, Urumqi 830046

  • Corresponding author: Jia Dianzeng, 
  • Received Date: 27 March 2016
    Available Online: 18 May 2016

    Fund Project:

  • The flexible coal based carbon nanofibers (CBCNFs) were prepared by electrospinning technique and well modified by using the low temperature plasma surface modification technology. The CBCNFs/MnO2 composite was prepared by in situ reduction reaction using plasma-modified CBCNFs as reductant to react with potassium permanganate (KMnO4). The morphology and structure of as-prepared CBCNFs/MnO2 composites were investigated by X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM, TEM). The results showed that the nanoflakes of MnO2 well coated on the CBCNFs. Furthermore, the electrochemical performance of the electrode material as flexible supercapacitor was investigated. The prepared material (CBCNFs/MnO2-2) with KMnO4/CBCNFs=2/1(mass ratio) shows good electrochemical performance. It was found that the CBCNFs/MnO2-2 electrodes showed a specific capacitance of 118 F·g-1 at a current density of 0.1 A·g-1, which is 4.5 times higher than that of the CBCNFs (26 F·g-1). The capacitance retention ratio of the CBCNFs/MnO2-2 remained 97% after 1000 cycles at a current density of 1 A·g-1.
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