Electrochemical performance of hierarchical hollow CoMn2O4 hanospheres in-situ grown on nickel foam as supercapacitor electrode materials

Hierarchical hollow nanospheres of cobalt manganese oxide(CoMn2O4) on nickel foam(NF) are facilely synthesized by a hydrothermal method and post heat treatment in air, and further characterized by diffraction of X-rays(XRD), field emission scanning elect...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	GE Zongyun, ZHOU Qingya, GUO Aiping, WANG Zhenhua, HUANG Jinping
Formato:	article
Lenguaje:	EN ZH
Publicado:	Academic Journals Center of Shanghai Normal University 2021
Materias:	cobalt manganese oxide(comn<sub>2</sub>o<sub>4</sub>) hierarchical hollow nanospheres hybrid supercapacitor electrochemical performance areal capacitance energy density power density Science (General) Q1-390
Acceso en línea:	https://doaj.org/article/088f3a824d3e4a26b89bb547b78c3005
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:088f3a824d3e4a26b89bb547b78c3005
record_format	dspace
spelling	oai:doaj.org-article:088f3a824d3e4a26b89bb547b78c30052021-11-12T03:34:00ZElectrochemical performance of hierarchical hollow CoMn<sub>2</sub>O<sub>4</sub> hanospheres <i>in-situ</i> grown on nickel foam as supercapacitor electrode materials1000-513710.3969/J.ISSN.1000-5137.2021.05.009https://doaj.org/article/088f3a824d3e4a26b89bb547b78c30052021-10-01T00:00:00Zhttp://qktg.shnu.edu.cn/zrb/shsfqkszrb/ch/reader/view_abstract.aspx?file_no=20210509https://doaj.org/toc/1000-5137Hierarchical hollow nanospheres of cobalt manganese oxide(CoMn<sub>2</sub>O<sub>4</sub>) on nickel foam(NF) are facilely synthesized by a hydrothermal method and post heat treatment in air, and further characterized by diffraction of X-rays(XRD), field emission scanning electron microscope (FE-SEM) and X-ray photoelectron spectroscopy(XPS). In a three-electrode system of electrochemical measurement, the areal capacitance of 0.1 Co<sup>2+</sup>-250 electrode material is as high as 6 184 mF·cm<sup>-2</sup> at 5 mA·cm<sup>-2</sup>. The hybrid supercapacitor assembled by 0.1 Co<sup>2+</sup>-250 as the positive electrode and commercial activated carbon (AC) as negative electrode presents a maximum energy density of 0.112 mWh·cm<sup>-2</sup> at 1.6 mW·cm<sup>-2</sup>. Even at the power density of 16 mW cm<sup>-2</sup>, the energy density still reaches 0.064 mWh·cm<sup>-2</sup>. After 10 000 charge/discharge cycles under the current density of 2 mA·cm<sup>-2</sup>, the capacitance retains 93% of the initial value. With excellent electrochemical performance and facilely cost-effective synthesis, such hierarchical CoMn<sub>2</sub>O<sub>4</sub> electrode material may hold great promise for high-performance supercapacitor applications.GE ZongyunZHOU QingyaGUO AipingWANG ZhenhuaHUANG JinpingAcademic Journals Center of Shanghai Normal Universityarticlecobalt manganese oxide(comn<sub>2</sub>o<sub>4</sub>)hierarchical hollow nanosphereshybrid supercapacitorelectrochemical performanceareal capacitanceenergy densitypower densityScience (General)Q1-390ENZHJournal of Shanghai Normal University (Natural Sciences), Vol 50, Iss 5, Pp 586-596 (2021)
institution	DOAJ
collection	DOAJ
language	EN ZH
topic	cobalt manganese oxide(comn<sub>2</sub>o<sub>4</sub>) hierarchical hollow nanospheres hybrid supercapacitor electrochemical performance areal capacitance energy density power density Science (General) Q1-390
spellingShingle	cobalt manganese oxide(comn<sub>2</sub>o<sub>4</sub>) hierarchical hollow nanospheres hybrid supercapacitor electrochemical performance areal capacitance energy density power density Science (General) Q1-390 GE Zongyun ZHOU Qingya GUO Aiping WANG Zhenhua HUANG Jinping Electrochemical performance of hierarchical hollow CoMn<sub>2</sub>O<sub>4</sub> hanospheres <i>in-situ</i> grown on nickel foam as supercapacitor electrode materials
description	Hierarchical hollow nanospheres of cobalt manganese oxide(CoMn<sub>2</sub>O<sub>4</sub>) on nickel foam(NF) are facilely synthesized by a hydrothermal method and post heat treatment in air, and further characterized by diffraction of X-rays(XRD), field emission scanning electron microscope (FE-SEM) and X-ray photoelectron spectroscopy(XPS). In a three-electrode system of electrochemical measurement, the areal capacitance of 0.1 Co<sup>2+</sup>-250 electrode material is as high as 6 184 mF·cm<sup>-2</sup> at 5 mA·cm<sup>-2</sup>. The hybrid supercapacitor assembled by 0.1 Co<sup>2+</sup>-250 as the positive electrode and commercial activated carbon (AC) as negative electrode presents a maximum energy density of 0.112 mWh·cm<sup>-2</sup> at 1.6 mW·cm<sup>-2</sup>. Even at the power density of 16 mW cm<sup>-2</sup>, the energy density still reaches 0.064 mWh·cm<sup>-2</sup>. After 10 000 charge/discharge cycles under the current density of 2 mA·cm<sup>-2</sup>, the capacitance retains 93% of the initial value. With excellent electrochemical performance and facilely cost-effective synthesis, such hierarchical CoMn<sub>2</sub>O<sub>4</sub> electrode material may hold great promise for high-performance supercapacitor applications.
format	article
author	GE Zongyun ZHOU Qingya GUO Aiping WANG Zhenhua HUANG Jinping
author_facet	GE Zongyun ZHOU Qingya GUO Aiping WANG Zhenhua HUANG Jinping
author_sort	GE Zongyun
title	Electrochemical performance of hierarchical hollow CoMn<sub>2</sub>O<sub>4</sub> hanospheres <i>in-situ</i> grown on nickel foam as supercapacitor electrode materials
title_short	Electrochemical performance of hierarchical hollow CoMn<sub>2</sub>O<sub>4</sub> hanospheres <i>in-situ</i> grown on nickel foam as supercapacitor electrode materials
title_full	Electrochemical performance of hierarchical hollow CoMn<sub>2</sub>O<sub>4</sub> hanospheres <i>in-situ</i> grown on nickel foam as supercapacitor electrode materials
title_fullStr	Electrochemical performance of hierarchical hollow CoMn<sub>2</sub>O<sub>4</sub> hanospheres <i>in-situ</i> grown on nickel foam as supercapacitor electrode materials
title_full_unstemmed	Electrochemical performance of hierarchical hollow CoMn<sub>2</sub>O<sub>4</sub> hanospheres <i>in-situ</i> grown on nickel foam as supercapacitor electrode materials
title_sort	electrochemical performance of hierarchical hollow comn<sub>2</sub>o<sub>4</sub> hanospheres <i>in-situ</i> grown on nickel foam as supercapacitor electrode materials
publisher	Academic Journals Center of Shanghai Normal University
publishDate	2021
url	https://doaj.org/article/088f3a824d3e4a26b89bb547b78c3005
work_keys_str_mv	AT gezongyun electrochemicalperformanceofhierarchicalhollowcomnsub2subosub4subhanospheresiinsituigrownonnickelfoamassupercapacitorelectrodematerials AT zhouqingya electrochemicalperformanceofhierarchicalhollowcomnsub2subosub4subhanospheresiinsituigrownonnickelfoamassupercapacitorelectrodematerials AT guoaiping electrochemicalperformanceofhierarchicalhollowcomnsub2subosub4subhanospheresiinsituigrownonnickelfoamassupercapacitorelectrodematerials AT wangzhenhua electrochemicalperformanceofhierarchicalhollowcomnsub2subosub4subhanospheresiinsituigrownonnickelfoamassupercapacitorelectrodematerials AT huangjinping electrochemicalperformanceofhierarchicalhollowcomnsub2subosub4subhanospheresiinsituigrownonnickelfoamassupercapacitorelectrodematerials
_version_	1718431270419038208

Electrochemical performance of hierarchical hollow CoMn<sub>2</sub>O<sub>4</sub> hanospheres <i>in-situ</i> grown on nickel foam as supercapacitor electrode materials

Ejemplares similares