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...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
R S C Publications
2012
|
| Online Access: | http://hdl.handle.net/20.500.11937/37468 |
| _version_ | 1848755056201957376 |
|---|---|
| author | Cui, Z. Guo, X.G. Yuan, Weiyong Li, C. |
| author_facet | Cui, Z. Guo, X.G. Yuan, Weiyong Li, C. |
| author_sort | Cui, Z. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| 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 ∼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. |
| first_indexed | 2025-11-14T08:50:14Z |
| format | Journal Article |
| id | curtin-20.500.11937-37468 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:50:14Z |
| publishDate | 2012 |
| publisher | R S C Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-374682017-09-13T13:38:15Z In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors Cui, Z. Guo, X.G. Yuan, Weiyong Li, C. 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 ∼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. 2012 Journal Article http://hdl.handle.net/20.500.11937/37468 10.1039/c2cp42022h R S C Publications restricted |
| spellingShingle | Cui, Z. Guo, X.G. Yuan, Weiyong Li, C. In situ synthesized heteropoly acid/polyaniline/graphene nanocomposites to simultaneously boost both double layer- and pseudo-capacitance for supercapacitors |
| title | 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_short | 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 |
| url | http://hdl.handle.net/20.500.11937/37468 |