Electrospun vanadium pentoxide/carbon nanofiber composites for supercapacitor electrodes

被引：83

作者：

Kim, Bo-Hye ^{[2
]}

Kim, Chang Hyo ^{[3
]}

Yang, Kap Seung ^{[1
,2
,3
]}

Rahy, Abdelaziz ^{[4
,5
]}

Yang, Duck J. ^{[4
,5
]}

机构：

[1] Chonnam Natl Univ, Dept Polymer & Fiber Syst Engn, Kwangju, South Korea

[2] Chonnam Natl Univ, Alan G MacDiarmid Energy Res Inst, Kwangju, South Korea

[3] Chonnam Natl Univ, Dept Adv Chem & Engn, Kwangju, South Korea

[4] Univ Texas Dallas, Dept Chem, Richardson, TX 75080 USA

[5] Univ Texas Dallas, AG MacDiarmid NanoTech Inst, Richardson, TX 75080 USA

来源：

ELECTROCHIMICA ACTA | 2012年 / 83卷

基金：

新加坡国家研究基金会;

关键词：

Vanadium pentoxide; Electrospinning; Carbon nanofiber composite; Porosity; Electrochemical capacitor; DOUBLE-LAYER CAPACITORS; POROUS CARBONS; ENERGY-STORAGE; PORE STRUCTURE; PERFORMANCE; NANOTUBES;

D O I：

10.1016/j.electacta.2012.07.093

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The vanadium pentoxide (V2O5)/carbon nanofiber composites (CNFCs) were prepared from polyacrylonitrile/V2O5 in N,N-dimethylformamide by a simple electrospinning method, and their electrochemical properties as supercapacitor electrodes were investigated. Different loadings of V2O5, the microstructures of the CNFCs (e.g., nanometer-size diameters, high specific surface areas, narrow pore size distributions, and tunable porosities) were changed, and the textural parameters significantly affected the electrochemical properties of the composites. The CNFC capacitors delivered the high specific capacitances of 150.0 Fg(-1) for the CNFCs in an aqueous, with promising energy densities of 18.8 Wh kg(-1), over a power density range of 400-20,000 W kg(-1). The CNFCs simultaneously exhibited excellent capacity retention. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：335 / 340

页数：6

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