In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors

It is challenging to simultaneously increase double layer- and pseudo-capacitance for supercapacitors. Phosphomolybdic acid/polyaniline/graphene nanocomposites (PMo12–PANI/GS) were prepared by using PMo12 as a bifunctional reagent for not only well dispersing graphene for high electrochemical double...

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Main Authors: Cui, Zhiming, Guo, Chun Xian, Yuan, Weiyong, Li, Chang Ming
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/101091
http://hdl.handle.net/10220/11089
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1010912020-03-07T11:40:22Z In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors Cui, Zhiming Guo, Chun Xian Yuan, Weiyong Li, Chang Ming School of Chemical and Biomedical Engineering It is challenging to simultaneously increase double layer- and pseudo-capacitance for supercapacitors. Phosphomolybdic acid/polyaniline/graphene nanocomposites (PMo12–PANI/GS) were prepared by using PMo12 as a bifunctional reagent for not only well dispersing graphene for high electrochemical double layer capacitance but also in situ chemically polymerizing aniline for high pseudocapacitance, resulting in a specific capacitance of 587 F g−1, which is [similar]1.5 and 6 times higher than that of PANI/GS (392 F g−1) and GS (103 F g−1), respectively. The nanocomposites also exhibit good reversibility and stability. Other kinds of heteropolyacids such as molybdovanadophosphoric acids (PMo12−xVx, x = 1, 2 and 3) were also used to prepare PMo12−xVx–PANI/GS nanocomposites, also showing enhanced double layer- and pseudo-capacitance. This further proves the proposed concept to simultaneously boost both double layer- and pseudo-capacitance and demonstrates that it could be a universal approach to significantly improve the capacitance for supercapacitors. 2013-07-10T03:15:46Z 2019-12-06T20:33:16Z 2013-07-10T03:15:46Z 2019-12-06T20:33:16Z 2012 2012 Journal Article Cui, Z., Guo, C. X., Yuan, W., Li, C. M. (2012). In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors. Physical Chemistry Chemical Physics, 14(37), 12823-12828. https://hdl.handle.net/10356/101091 http://hdl.handle.net/10220/11089 10.1039/C2CP42022H en Physical chemistry chemical physics © 2012 The Owner Societies.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description It is challenging to simultaneously increase double layer- and pseudo-capacitance for supercapacitors. Phosphomolybdic acid/polyaniline/graphene nanocomposites (PMo12–PANI/GS) were prepared by using PMo12 as a bifunctional reagent for not only well dispersing graphene for high electrochemical double layer capacitance but also in situ chemically polymerizing aniline for high pseudocapacitance, resulting in a specific capacitance of 587 F g−1, which is [similar]1.5 and 6 times higher than that of PANI/GS (392 F g−1) and GS (103 F g−1), respectively. The nanocomposites also exhibit good reversibility and stability. Other kinds of heteropolyacids such as molybdovanadophosphoric acids (PMo12−xVx, x = 1, 2 and 3) were also used to prepare PMo12−xVx–PANI/GS nanocomposites, also showing enhanced double layer- and pseudo-capacitance. This further proves the proposed concept to simultaneously boost both double layer- and pseudo-capacitance and demonstrates that it could be a universal approach to significantly improve the capacitance for supercapacitors.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Cui, Zhiming
Guo, Chun Xian
Yuan, Weiyong
Li, Chang Ming
format Article
author Cui, Zhiming
Guo, Chun Xian
Yuan, Weiyong
Li, Chang Ming
spellingShingle Cui, Zhiming
Guo, Chun Xian
Yuan, Weiyong
Li, Chang Ming
In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors
author_sort Cui, Zhiming
title In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors
title_short In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors
title_full In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors
title_fullStr In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors
title_full_unstemmed In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors
title_sort in situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors
publishDate 2013
url https://hdl.handle.net/10356/101091
http://hdl.handle.net/10220/11089
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