Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Sun, Kanjun, Hua, Fengting, Cui, Shuzhen, Zhu, Yanrong, Peng, Hui, Ma, Guofu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
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
_version_ 1784694971363753984
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
work_keys_str_mv AT sunkanjun anasymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT huafengting anasymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT cuishuzhen anasymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT zhuyanrong anasymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT penghui anasymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT maguofu anasymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT sunkanjun asymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT huafengting asymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT cuishuzhen asymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT zhuyanrong asymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT penghui asymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon
AT maguofu asymmetricsupercapacitorbasedoncontrollablewo3nanorodbundleandalfalfaderivedporouscarbon