Nitrogen-doped hollow activated carbon nanofibers as high performance supercapacitor electrodes

Qiang Xu; Xiaoliang Yu; Qinghua Liang; Yu Bai; Zheng Hong Huang; Feiyu Kang

doi:10.1016/j.jelechem.2014.12.027

Nitrogen-doped hollow activated carbon nanofibers as high performance supercapacitor electrodes

Qiang Xu, Xiaoliang Yu, Qinghua Liang, Yu Bai, Zheng Hong Huang, Feiyu Kang

Research output: Journal article publication › Journal article › Academic research › peer-review

65 Citations (Scopus)

Abstract

Nitrogen-doped hollow activated carbon nanofibers (HACNFs) have been prepared by the concentric electrospinning and the following NH₃ activation. The as-obtained samples were directly used as supercapacitor electrode without binders and conductive additives. Owing to the unique hollow architecture and high N-doping level (8.2%), the HACNFs exhibit a high specific capacitance of 197 F g^-1 at 0.2 A g^-1, which is 1.33 times than that of the solid electrospun nanofibers activated in the same condition. The samples also possess a superior rate capability of 72.1% (143 F g^-1) at 20 A g^-1 and long-term cycling stability with a retention of 98.6% after 1000 cycles at 5 A g^-1 in 6 M KOH.

Original language	English
Pages (from-to)	84-88
Number of pages	5
Journal	Journal of Electroanalytical Chemistry
Volume	739
DOIs	https://doi.org/10.1016/j.jelechem.2014.12.027
Publication status	Published - 15 Feb 2015
Externally published	Yes

Keywords

Concentric electrospinning
Hollow activated carbon nanofibers
Nitrogen doping
Supercapacitor

ASJC Scopus subject areas

Analytical Chemistry
General Chemical Engineering
Electrochemistry

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10.1016/j.jelechem.2014.12.027

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title = "Nitrogen-doped hollow activated carbon nanofibers as high performance supercapacitor electrodes",

abstract = "Nitrogen-doped hollow activated carbon nanofibers (HACNFs) have been prepared by the concentric electrospinning and the following NH3 activation. The as-obtained samples were directly used as supercapacitor electrode without binders and conductive additives. Owing to the unique hollow architecture and high N-doping level (8.2%), the HACNFs exhibit a high specific capacitance of 197 F g-1 at 0.2 A g-1, which is 1.33 times than that of the solid electrospun nanofibers activated in the same condition. The samples also possess a superior rate capability of 72.1% (143 F g-1) at 20 A g-1 and long-term cycling stability with a retention of 98.6% after 1000 cycles at 5 A g-1 in 6 M KOH.",

keywords = "Concentric electrospinning, Hollow activated carbon nanofibers, Nitrogen doping, Supercapacitor",

author = "Qiang Xu and Xiaoliang Yu and Qinghua Liang and Yu Bai and Huang, {Zheng Hong} and Feiyu Kang",

note = "Funding Information: The authors gratefully thank the National Natural Science Foundation of China (Grant No. 51232005 ) and the 973 program of China (No. 2014CB932401 ). Publisher Copyright: {\textcopyright} 2014 Elsevier B.V. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "2015",

month = feb,

day = "15",

doi = "10.1016/j.jelechem.2014.12.027",

language = "English",

volume = "739",

pages = "84--88",

journal = "Journal of Electroanalytical Chemistry",

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TY - JOUR

T1 - Nitrogen-doped hollow activated carbon nanofibers as high performance supercapacitor electrodes

AU - Xu, Qiang

AU - Yu, Xiaoliang

AU - Liang, Qinghua

AU - Bai, Yu

AU - Huang, Zheng Hong

AU - Kang, Feiyu

N1 - Funding Information: The authors gratefully thank the National Natural Science Foundation of China (Grant No. 51232005 ) and the 973 program of China (No. 2014CB932401 ). Publisher Copyright: © 2014 Elsevier B.V. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2015/2/15

Y1 - 2015/2/15

N2 - Nitrogen-doped hollow activated carbon nanofibers (HACNFs) have been prepared by the concentric electrospinning and the following NH3 activation. The as-obtained samples were directly used as supercapacitor electrode without binders and conductive additives. Owing to the unique hollow architecture and high N-doping level (8.2%), the HACNFs exhibit a high specific capacitance of 197 F g-1 at 0.2 A g-1, which is 1.33 times than that of the solid electrospun nanofibers activated in the same condition. The samples also possess a superior rate capability of 72.1% (143 F g-1) at 20 A g-1 and long-term cycling stability with a retention of 98.6% after 1000 cycles at 5 A g-1 in 6 M KOH.

AB - Nitrogen-doped hollow activated carbon nanofibers (HACNFs) have been prepared by the concentric electrospinning and the following NH3 activation. The as-obtained samples were directly used as supercapacitor electrode without binders and conductive additives. Owing to the unique hollow architecture and high N-doping level (8.2%), the HACNFs exhibit a high specific capacitance of 197 F g-1 at 0.2 A g-1, which is 1.33 times than that of the solid electrospun nanofibers activated in the same condition. The samples also possess a superior rate capability of 72.1% (143 F g-1) at 20 A g-1 and long-term cycling stability with a retention of 98.6% after 1000 cycles at 5 A g-1 in 6 M KOH.

KW - Concentric electrospinning

KW - Hollow activated carbon nanofibers

KW - Nitrogen doping

KW - Supercapacitor

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U2 - 10.1016/j.jelechem.2014.12.027

DO - 10.1016/j.jelechem.2014.12.027

M3 - Journal article

AN - SCOPUS:84920439718

SN - 1572-6657

VL - 739

SP - 84

EP - 88

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

ER -

Nitrogen-doped hollow activated carbon nanofibers as high performance supercapacitor electrodes

Abstract

Keywords

ASJC Scopus subject areas

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