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An asymmetric supercapacitor based on controllable WO(3) nanorod bundle and alfalfa-derived porous carbon
A novel asymmetric supercapacitor (ASC) is assembled on the basis of an inerratic hexagonal-like WO(3) nanorod bundle as a negative electrode and graphene-like alfalfa-derived porous activated carbon (APAC) as the positive electrode in 1 M H(2)SO(4) aqueous electrolyte. The WO(3) nanostructures prep...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9043835/ https://www.ncbi.nlm.nih.gov/pubmed/35496394 http://dx.doi.org/10.1039/d1ra04788d |
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author | Sun, Kanjun Hua, Fengting Cui, Shuzhen Zhu, Yanrong Peng, Hui Ma, Guofu |
author_facet | Sun, Kanjun Hua, Fengting Cui, Shuzhen Zhu, Yanrong Peng, Hui Ma, Guofu |
author_sort | Sun, Kanjun |
collection | PubMed |
description | A novel asymmetric supercapacitor (ASC) is assembled on the basis of an inerratic hexagonal-like WO(3) nanorod bundle as a negative electrode and graphene-like alfalfa-derived porous activated carbon (APAC) as the positive electrode in 1 M H(2)SO(4) aqueous electrolyte. The WO(3) nanostructures prepared at pH of 1.6, 1.8, 2.0, 2.5 and 3.0 display hexagonal disc-like, nanorod bundle, inerratic hexagonal-like, sphere-like, and needle-shaped nanorod morphology. WO(3)-2.0, which was prepared at a pH of 2.0, exhibits high specific capacitance (415.3 F g(−1) at 0.5 A g(−1)). APAC-2, which had the mass ratios of dried alfalfa and ZnCl(2) as 1 : 2, showed a 3D porous structure, large surface area (1576.3 m(2) g(−1)), high specific capacitance (262.1 F g(−1) at 0.5 A g(−1)), good cycling stability with 96% of initial specific capacitance after 5000 consecutive cycles. The ASC assembled with WO(3)-2.0 and APAC-2 exhibits high energy density (27.3 W h kg(−1) at a power density of 403.1 W kg(−1)), as well as good electrochemical stability (82.6% capacitance retention after 5000 cycles). Such outstanding electrochemical behavior implies that the electrode materials are promising for practical energy-storage systems. |
format | Online Article Text |
id | pubmed-9043835 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90438352022-04-28 An asymmetric supercapacitor based on controllable WO(3) nanorod bundle and alfalfa-derived porous carbon Sun, Kanjun Hua, Fengting Cui, Shuzhen Zhu, Yanrong Peng, Hui Ma, Guofu RSC Adv Chemistry A novel asymmetric supercapacitor (ASC) is assembled on the basis of an inerratic hexagonal-like WO(3) nanorod bundle as a negative electrode and graphene-like alfalfa-derived porous activated carbon (APAC) as the positive electrode in 1 M H(2)SO(4) aqueous electrolyte. The WO(3) nanostructures prepared at pH of 1.6, 1.8, 2.0, 2.5 and 3.0 display hexagonal disc-like, nanorod bundle, inerratic hexagonal-like, sphere-like, and needle-shaped nanorod morphology. WO(3)-2.0, which was prepared at a pH of 2.0, exhibits high specific capacitance (415.3 F g(−1) at 0.5 A g(−1)). APAC-2, which had the mass ratios of dried alfalfa and ZnCl(2) as 1 : 2, showed a 3D porous structure, large surface area (1576.3 m(2) g(−1)), high specific capacitance (262.1 F g(−1) at 0.5 A g(−1)), good cycling stability with 96% of initial specific capacitance after 5000 consecutive cycles. The ASC assembled with WO(3)-2.0 and APAC-2 exhibits high energy density (27.3 W h kg(−1) at a power density of 403.1 W kg(−1)), as well as good electrochemical stability (82.6% capacitance retention after 5000 cycles). Such outstanding electrochemical behavior implies that the electrode materials are promising for practical energy-storage systems. The Royal Society of Chemistry 2021-11-23 /pmc/articles/PMC9043835/ /pubmed/35496394 http://dx.doi.org/10.1039/d1ra04788d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Sun, Kanjun Hua, Fengting Cui, Shuzhen Zhu, Yanrong Peng, Hui Ma, Guofu An asymmetric supercapacitor based on controllable WO(3) nanorod bundle and alfalfa-derived porous carbon |
title | An asymmetric supercapacitor based on controllable WO(3) nanorod bundle and alfalfa-derived porous carbon |
title_full | An asymmetric supercapacitor based on controllable WO(3) nanorod bundle and alfalfa-derived porous carbon |
title_fullStr | An asymmetric supercapacitor based on controllable WO(3) nanorod bundle and alfalfa-derived porous carbon |
title_full_unstemmed | An asymmetric supercapacitor based on controllable WO(3) nanorod bundle and alfalfa-derived porous carbon |
title_short | An asymmetric supercapacitor based on controllable WO(3) nanorod bundle and alfalfa-derived porous carbon |
title_sort | asymmetric supercapacitor based on controllable wo(3) nanorod bundle and alfalfa-derived porous carbon |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9043835/ https://www.ncbi.nlm.nih.gov/pubmed/35496394 http://dx.doi.org/10.1039/d1ra04788d |
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