High-energy density asymmetric supercapacitor based on electrospun vanadium pentoxide and polyaniline nanofibers in aqueous electrolyte

Vanadium pentoxide nanofibers (VNF) and polyaniline nanofibers (PANF) nanofibers are synthesized by electrospinning and rapid chemical polymerization routes, respectively. The electrochemical performances of synthesized nanofibers are evaluated in symmetrical (VNF-VNF, PANF-PANF) and asymmetrical (V...

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Main Authors: Gupta, Nutan, Mhaisalkar, Subodh Gautam, Madhavi, Srinivasan, Mak, Wai Fatt, Wee, Grace, Aravindan, Vanchiappan
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/97696
http://hdl.handle.net/10220/10906
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-976962021-01-08T07:52:45Z High-energy density asymmetric supercapacitor based on electrospun vanadium pentoxide and polyaniline nanofibers in aqueous electrolyte Gupta, Nutan Mhaisalkar, Subodh Gautam Madhavi, Srinivasan Mak, Wai Fatt Wee, Grace Aravindan, Vanchiappan School of Materials Science & Engineering Energy Research Institute @ NTU (ERI@N) Vanadium pentoxide nanofibers (VNF) and polyaniline nanofibers (PANF) nanofibers are synthesized by electrospinning and rapid chemical polymerization routes, respectively. The electrochemical performances of synthesized nanofibers are evaluated in symmetrical (VNF-VNF, PANF-PANF) and asymmetrical (VNF-PANF) configurations in aqueous KCl (3 M) medium by cyclic voltammetry (CV) and galvanostatic measurements. Both VNF and PANF fibers exhibits pseudocapacitive behavior at the electrode/electrolyte interface. The VNF-PANF asymmetrical device is capable of delivering an energy and power densities of 26.7 Wh kg−1 at 0.22 kW kg−1, respectively which is higher than that of symmetrical configuration of VNF-VNF (5.2 Wh kg−1 at 0.22 kW kg−1). In addition, VNF-PANF asymmetrical supercapacitor retained 73% of specific capacitance after 2000 cycles. These results clearly shows that high energy density supercapacitor can be constructed utilizing transitional metal oxides with conducting polymers as electro-active materials in an asymmetrical configuration in aqueous medium. Published version 2013-07-03T03:20:02Z 2019-12-06T19:45:35Z 2013-07-03T03:20:02Z 2019-12-06T19:45:35Z 2012 2012 Journal Article Mak, W. F., Wee, G., Aravindan, V., Gupta, N., Mhaisalkar, S. G., & Madhavi, S. (2012). High-Energy Density Asymmetric Supercapacitor Based on Electrospun Vanadium Pentoxide and Polyaniline Nanofibers in Aqueous Electrolyte. Journal of The Electrochemical Society, 159(9), A1481-A1488. 0013-4651 https://hdl.handle.net/10356/97696 http://hdl.handle.net/10220/10906 10.1149/2.040209jes en Journal of the electrochemical society © 2012 The Electrochemical Society. This paper was published in Journal of The Electrochemical Society and is made available as an electronic reprint (preprint) with permission of The Electrochemical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1149/2.040209jes]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
description Vanadium pentoxide nanofibers (VNF) and polyaniline nanofibers (PANF) nanofibers are synthesized by electrospinning and rapid chemical polymerization routes, respectively. The electrochemical performances of synthesized nanofibers are evaluated in symmetrical (VNF-VNF, PANF-PANF) and asymmetrical (VNF-PANF) configurations in aqueous KCl (3 M) medium by cyclic voltammetry (CV) and galvanostatic measurements. Both VNF and PANF fibers exhibits pseudocapacitive behavior at the electrode/electrolyte interface. The VNF-PANF asymmetrical device is capable of delivering an energy and power densities of 26.7 Wh kg−1 at 0.22 kW kg−1, respectively which is higher than that of symmetrical configuration of VNF-VNF (5.2 Wh kg−1 at 0.22 kW kg−1). In addition, VNF-PANF asymmetrical supercapacitor retained 73% of specific capacitance after 2000 cycles. These results clearly shows that high energy density supercapacitor can be constructed utilizing transitional metal oxides with conducting polymers as electro-active materials in an asymmetrical configuration in aqueous medium.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Gupta, Nutan
Mhaisalkar, Subodh Gautam
Madhavi, Srinivasan
Mak, Wai Fatt
Wee, Grace
Aravindan, Vanchiappan
format Article
author Gupta, Nutan
Mhaisalkar, Subodh Gautam
Madhavi, Srinivasan
Mak, Wai Fatt
Wee, Grace
Aravindan, Vanchiappan
spellingShingle Gupta, Nutan
Mhaisalkar, Subodh Gautam
Madhavi, Srinivasan
Mak, Wai Fatt
Wee, Grace
Aravindan, Vanchiappan
High-energy density asymmetric supercapacitor based on electrospun vanadium pentoxide and polyaniline nanofibers in aqueous electrolyte
author_sort Gupta, Nutan
title High-energy density asymmetric supercapacitor based on electrospun vanadium pentoxide and polyaniline nanofibers in aqueous electrolyte
title_short High-energy density asymmetric supercapacitor based on electrospun vanadium pentoxide and polyaniline nanofibers in aqueous electrolyte
title_full High-energy density asymmetric supercapacitor based on electrospun vanadium pentoxide and polyaniline nanofibers in aqueous electrolyte
title_fullStr High-energy density asymmetric supercapacitor based on electrospun vanadium pentoxide and polyaniline nanofibers in aqueous electrolyte
title_full_unstemmed High-energy density asymmetric supercapacitor based on electrospun vanadium pentoxide and polyaniline nanofibers in aqueous electrolyte
title_sort high-energy density asymmetric supercapacitor based on electrospun vanadium pentoxide and polyaniline nanofibers in aqueous electrolyte
publishDate 2013
url https://hdl.handle.net/10356/97696
http://hdl.handle.net/10220/10906
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