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

1.
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 MnO₂well 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.
- Electrospinning,
- Coal based carbon nanofibers,
- Plasma,
- MnO₂,
- Flexible supercapacitor
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

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通讯作者: 陈斌, bchen63@163.com

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