Cargando…

Hierarchical VOOH hollow spheres for symmetrical and asymmetrical supercapacitor devices

Hierarchical VOOH hollow spheres with low crystallinity composed of nanoparticles were prepared by a facile and template-free method, which involved a precipitation of precursor microspheres in aqueous solution at room temperature and subsequent hydrothermal reaction. Quasi-solid-state symmetric and...

Descripción completa

Detalles Bibliográficos
Autores principales: Jing, Xuyang, Wang, Cong, Feng, Wenjing, Xing, Na, Jiang, Hanmei, Lu, Xiangyu, Zhang, Yifu, Meng, Changgong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society Publishing 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5792947/
https://www.ncbi.nlm.nih.gov/pubmed/29410870
http://dx.doi.org/10.1098/rsos.171768
_version_ 1783296841965633536
author Jing, Xuyang
Wang, Cong
Feng, Wenjing
Xing, Na
Jiang, Hanmei
Lu, Xiangyu
Zhang, Yifu
Meng, Changgong
author_facet Jing, Xuyang
Wang, Cong
Feng, Wenjing
Xing, Na
Jiang, Hanmei
Lu, Xiangyu
Zhang, Yifu
Meng, Changgong
author_sort Jing, Xuyang
collection PubMed
description Hierarchical VOOH hollow spheres with low crystallinity composed of nanoparticles were prepared by a facile and template-free method, which involved a precipitation of precursor microspheres in aqueous solution at room temperature and subsequent hydrothermal reaction. Quasi-solid-state symmetric and asymmetric supercapacitor (SSC and ASC) devices were fabricated using hierarchical VOOH hollow spheres as the electrodes, and the electrochemical properties of the VOOH//VOOH SSC device and the VOOH//AC ASC device were studied by cyclic voltammetry (CV), galvanostatic charge–discharge (GCD) and electrochemical impedance spectroscopy (EIS). Results demonstrated that the electrochemical performance of the VOOH//AC ASC device was better than that of the VOOH//VOOH SSC device. After 3000 cycles, the specific capacitance of the VOOH//AC ASC device retains 83% of the initial capacitance, while the VOOH//VOOH SSC device retains only 7.7%. Findings in this work proved that hierarchical VOOH hollow spheres could be a promising candidate as an ideal electrode material for supercapacitor devices.
format Online
Article
Text
id pubmed-5792947
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher The Royal Society Publishing
record_format MEDLINE/PubMed
spelling pubmed-57929472018-02-06 Hierarchical VOOH hollow spheres for symmetrical and asymmetrical supercapacitor devices Jing, Xuyang Wang, Cong Feng, Wenjing Xing, Na Jiang, Hanmei Lu, Xiangyu Zhang, Yifu Meng, Changgong R Soc Open Sci Chemistry Hierarchical VOOH hollow spheres with low crystallinity composed of nanoparticles were prepared by a facile and template-free method, which involved a precipitation of precursor microspheres in aqueous solution at room temperature and subsequent hydrothermal reaction. Quasi-solid-state symmetric and asymmetric supercapacitor (SSC and ASC) devices were fabricated using hierarchical VOOH hollow spheres as the electrodes, and the electrochemical properties of the VOOH//VOOH SSC device and the VOOH//AC ASC device were studied by cyclic voltammetry (CV), galvanostatic charge–discharge (GCD) and electrochemical impedance spectroscopy (EIS). Results demonstrated that the electrochemical performance of the VOOH//AC ASC device was better than that of the VOOH//VOOH SSC device. After 3000 cycles, the specific capacitance of the VOOH//AC ASC device retains 83% of the initial capacitance, while the VOOH//VOOH SSC device retains only 7.7%. Findings in this work proved that hierarchical VOOH hollow spheres could be a promising candidate as an ideal electrode material for supercapacitor devices. The Royal Society Publishing 2018-01-31 /pmc/articles/PMC5792947/ /pubmed/29410870 http://dx.doi.org/10.1098/rsos.171768 Text en © 2018 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
spellingShingle Chemistry
Jing, Xuyang
Wang, Cong
Feng, Wenjing
Xing, Na
Jiang, Hanmei
Lu, Xiangyu
Zhang, Yifu
Meng, Changgong
Hierarchical VOOH hollow spheres for symmetrical and asymmetrical supercapacitor devices
title Hierarchical VOOH hollow spheres for symmetrical and asymmetrical supercapacitor devices
title_full Hierarchical VOOH hollow spheres for symmetrical and asymmetrical supercapacitor devices
title_fullStr Hierarchical VOOH hollow spheres for symmetrical and asymmetrical supercapacitor devices
title_full_unstemmed Hierarchical VOOH hollow spheres for symmetrical and asymmetrical supercapacitor devices
title_short Hierarchical VOOH hollow spheres for symmetrical and asymmetrical supercapacitor devices
title_sort hierarchical vooh hollow spheres for symmetrical and asymmetrical supercapacitor devices
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5792947/
https://www.ncbi.nlm.nih.gov/pubmed/29410870
http://dx.doi.org/10.1098/rsos.171768
work_keys_str_mv AT jingxuyang hierarchicalvoohhollowspheresforsymmetricalandasymmetricalsupercapacitordevices
AT wangcong hierarchicalvoohhollowspheresforsymmetricalandasymmetricalsupercapacitordevices
AT fengwenjing hierarchicalvoohhollowspheresforsymmetricalandasymmetricalsupercapacitordevices
AT xingna hierarchicalvoohhollowspheresforsymmetricalandasymmetricalsupercapacitordevices
AT jianghanmei hierarchicalvoohhollowspheresforsymmetricalandasymmetricalsupercapacitordevices
AT luxiangyu hierarchicalvoohhollowspheresforsymmetricalandasymmetricalsupercapacitordevices
AT zhangyifu hierarchicalvoohhollowspheresforsymmetricalandasymmetricalsupercapacitordevices
AT mengchanggong hierarchicalvoohhollowspheresforsymmetricalandasymmetricalsupercapacitordevices