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

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 us...

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Autores principales: Wang, Feifei, Sun, Shiguo, Xu, Yongqian, Wang, Ting, Yu, Ruijin, Li, Hongjuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498571/
https://www.ncbi.nlm.nih.gov/pubmed/28680040
http://dx.doi.org/10.1038/s41598-017-04807-1
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author Wang, Feifei
Sun, Shiguo
Xu, Yongqian
Wang, Ting
Yu, Ruijin
Li, Hongjuan
author_facet Wang, Feifei
Sun, Shiguo
Xu, Yongqian
Wang, Ting
Yu, Ruijin
Li, Hongjuan
author_sort Wang, Feifei
collection PubMed
description 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 m(2) 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.
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spelling pubmed-54985712017-07-10 High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon Wang, Feifei Sun, Shiguo Xu, Yongqian Wang, Ting Yu, Ruijin Li, Hongjuan Sci Rep Article 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 m(2) 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. Nature Publishing Group UK 2017-07-05 /pmc/articles/PMC5498571/ /pubmed/28680040 http://dx.doi.org/10.1038/s41598-017-04807-1 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Wang, Feifei
Sun, Shiguo
Xu, Yongqian
Wang, Ting
Yu, Ruijin
Li, Hongjuan
High performance asymmetric supercapacitor based on Cobalt Nickle Iron-layered double hydroxide/carbon nanofibres and activated carbon
title 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_short 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
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5498571/
https://www.ncbi.nlm.nih.gov/pubmed/28680040
http://dx.doi.org/10.1038/s41598-017-04807-1
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