Electrospun carbon nanofiber-carbon nanotubes coated polyaniline composites with improved electrochemical properties for supercapacitors

被引：55

作者：

Agyemang, Frank Ofori ^{[1
,2
]}

Tomboc, Gracita M. ^{[1
]}

Kwofie, Samuel ^{[2
]}

Kim, Hern ^{[1
]}

机构：

[1] Myongji Univ, Smart Living Innovat Ctr, Dept Energy Sci & Technol, Yongin 17058, Gyeonggi Do, South Korea

[2] Kwame Nkrumah Univ Sci & Technol, Dept Mat Engn, Kumasi, Ghana

来源：

ELECTROCHIMICA ACTA | 2018年 / 259卷

基金：

新加坡国家研究基金会;

关键词：

Supercapacitor; Carbon nanofiber composites; Specific capacitance; Cycling stability; SOLID-STATE SUPERCAPACITORS; PERFORMANCE; MECHANISM;

D O I：

10.1016/j.electacta.2017.12.079

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The carbon nanofiber-carbon nanotube (CNF-CNT) composites were fabricated by simple electrospinning and carbonization of polyacrylonitrile (PAN)-CNT solution prepared by first sonicating and stirring the CNT in N, N-dimethylformamide (DMF) as solvent. Aniline monomer was then coated on the composite materials via in situ chemical polymerization to form CNF-CNT-PANI composite. The as-prepared samples were then characterized. Importantly, the dispersed CNTs in the CNF-CNT composites were crucial for the CNF-CNTs acting as supports for the CNF-CNT-PANI composites to attain high electrochemical properties. The composite electrode material is found to be used as effective electrode material for supercapacitors with specific capacitance as high as 1119 F g(-1) at 1 A g(-1) compared to the bare CNF film with a specific capacitance of 278 F g(-1). The composite electrode displaced excellent cyclic stability with retention of 98% even after 2000 cycles at a current density of 10 A g(-1). (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1110 / 1119

页数：10

共 34 条

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