High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon

Abstract A novel Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres (CoNiFe-LDH/CNFs-0.5) composite was successfully fabricated through an easy in situ growth approach. The morphology and composition of the obtained materials were systematically investigated. When the two derived material...

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Autores principales:	Feifei Wang, Shiguo Sun, Yongqian Xu, Ting Wang, Ruijin Yu, Hongjuan Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/646ba423ae7b4513869a96c09eee7f13
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spelling	oai:doaj.org-article:646ba423ae7b4513869a96c09eee7f132021-12-02T15:04:52ZHigh performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon10.1038/s41598-017-04807-12045-2322https://doaj.org/article/646ba423ae7b4513869a96c09eee7f132017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04807-1https://doaj.org/toc/2045-2322Abstract A novel Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres (CoNiFe-LDH/CNFs-0.5) composite was successfully fabricated through an easy in situ growth approach. The morphology and composition of the obtained materials were systematically investigated. When the two derived materials were used for supercapacitor electrodes, the CoNiFe-LDH/CNFs-0.5 composite displayed high specific surface area (114.2 m2 g−1), specific capacitance (1203 F g−1 at 1 A g−1) and rate capability (77.1% from 1 A g−1 to 10 A g−1), which were considerably higher than those of pure CoNiFe-LDH. Moreover, the specific capacitance of CoNiFe-LDH/CNFs-0.5 composite remained at 94.4% after 1000 cycles at 20 A g−1, suggesting excellent long-time cycle life. The asymmetric supercapacitor based on CoNiFe-LDH/CNFs-0.5 as a positive electrode and activated carbon as a negative electrode was manufactured and it exhibited a specific capacitance of 84.9 F g−1 at 1 A g−1 and a high energy density of 30.2 W h kg−1. More importantly, this device showed long-term cycling stability, with 82.7% capacity retention after 2000 cycles at 10 A g−1. Thus, this composite with outstanding electrochemical performance could be a promising electrode material for supercapacitors.Feifei WangShiguo SunYongqian XuTing WangRuijin YuHongjuan LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Feifei Wang Shiguo Sun Yongqian Xu Ting Wang Ruijin Yu Hongjuan Li High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon
description	Abstract A novel Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres (CoNiFe-LDH/CNFs-0.5) composite was successfully fabricated through an easy in situ growth approach. The morphology and composition of the obtained materials were systematically investigated. When the two derived materials were used for supercapacitor electrodes, the CoNiFe-LDH/CNFs-0.5 composite displayed high specific surface area (114.2 m2 g−1), specific capacitance (1203 F g−1 at 1 A g−1) and rate capability (77.1% from 1 A g−1 to 10 A g−1), which were considerably higher than those of pure CoNiFe-LDH. Moreover, the specific capacitance of CoNiFe-LDH/CNFs-0.5 composite remained at 94.4% after 1000 cycles at 20 A g−1, suggesting excellent long-time cycle life. The asymmetric supercapacitor based on CoNiFe-LDH/CNFs-0.5 as a positive electrode and activated carbon as a negative electrode was manufactured and it exhibited a specific capacitance of 84.9 F g−1 at 1 A g−1 and a high energy density of 30.2 W h kg−1. More importantly, this device showed long-term cycling stability, with 82.7% capacity retention after 2000 cycles at 10 A g−1. Thus, this composite with outstanding electrochemical performance could be a promising electrode material for supercapacitors.
format	article
author	Feifei Wang Shiguo Sun Yongqian Xu Ting Wang Ruijin Yu Hongjuan Li
author_facet	Feifei Wang Shiguo Sun Yongqian Xu Ting Wang Ruijin Yu Hongjuan Li
author_sort	Feifei Wang
title	High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon
title_short	High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon
title_full	High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon
title_fullStr	High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon
title_full_unstemmed	High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon
title_sort	high performance asymmetric supercapacitor based on cobalt nickle iron-layered double hydroxide/carbon nanofibres and activated carbon
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/646ba423ae7b4513869a96c09eee7f13
work_keys_str_mv	AT feifeiwang highperformanceasymmetricsupercapacitorbasedoncobaltnickleironlayereddoublehydroxidecarbonnanofibresandactivatedcarbon AT shiguosun highperformanceasymmetricsupercapacitorbasedoncobaltnickleironlayereddoublehydroxidecarbonnanofibresandactivatedcarbon AT yongqianxu highperformanceasymmetricsupercapacitorbasedoncobaltnickleironlayereddoublehydroxidecarbonnanofibresandactivatedcarbon AT tingwang highperformanceasymmetricsupercapacitorbasedoncobaltnickleironlayereddoublehydroxidecarbonnanofibresandactivatedcarbon AT ruijinyu highperformanceasymmetricsupercapacitorbasedoncobaltnickleironlayereddoublehydroxidecarbonnanofibresandactivatedcarbon AT hongjuanli highperformanceasymmetricsupercapacitorbasedoncobaltnickleironlayereddoublehydroxidecarbonnanofibresandactivatedcarbon
_version_	1718389020321382400

High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon

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