Fabrication of hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam as high–rate electrodes for asymmetric supercapacitors

Design and fabrication of a hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam by a facile two-step hydrothermal method. The electrochemical measurements prove these composites with MnO(2) definitely offer better supercapacitive performance of the MgCo(2)O(4) electrode material. T...

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Autores principales: Xu, Jiasheng, Wang, Lin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6715631/
https://www.ncbi.nlm.nih.gov/pubmed/31467302
http://dx.doi.org/10.1038/s41598-019-48931-6
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author Xu, Jiasheng
Wang, Lin
author_facet Xu, Jiasheng
Wang, Lin
author_sort Xu, Jiasheng
collection PubMed
description Design and fabrication of a hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam by a facile two-step hydrothermal method. The electrochemical measurements prove these composites with MnO(2) definitely offer better supercapacitive performance of the MgCo(2)O(4) electrode material. The nanowall structure provides more active sites and charge transfer during the Faradic reaction. The MgCo(2)O(4)@MnO(2) nanowall shows an excellent electrochemical performance (852.5 F g(−1) at 1 A g(−1)). The asymmetric supercapacitor is composed of the MgCo(2)O(4)@MnO(2) nanowall and the activated carbon (AC). The energy densities of the asymmetric supercapacitor device can keep up 67.2 Wh·kg(−1) at 5760.0 W·kg(−1). The MgCo(2)O(4)@MnO(2) nanowall shows excellent supercapacitive performance and has a great potential for more research and application in the asymmetric supercapacitor devices field.
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spelling pubmed-67156312019-09-13 Fabrication of hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam as high–rate electrodes for asymmetric supercapacitors Xu, Jiasheng Wang, Lin Sci Rep Article Design and fabrication of a hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam by a facile two-step hydrothermal method. The electrochemical measurements prove these composites with MnO(2) definitely offer better supercapacitive performance of the MgCo(2)O(4) electrode material. The nanowall structure provides more active sites and charge transfer during the Faradic reaction. The MgCo(2)O(4)@MnO(2) nanowall shows an excellent electrochemical performance (852.5 F g(−1) at 1 A g(−1)). The asymmetric supercapacitor is composed of the MgCo(2)O(4)@MnO(2) nanowall and the activated carbon (AC). The energy densities of the asymmetric supercapacitor device can keep up 67.2 Wh·kg(−1) at 5760.0 W·kg(−1). The MgCo(2)O(4)@MnO(2) nanowall shows excellent supercapacitive performance and has a great potential for more research and application in the asymmetric supercapacitor devices field. Nature Publishing Group UK 2019-08-29 /pmc/articles/PMC6715631/ /pubmed/31467302 http://dx.doi.org/10.1038/s41598-019-48931-6 Text en © The Author(s) 2019 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
Xu, Jiasheng
Wang, Lin
Fabrication of hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam as high–rate electrodes for asymmetric supercapacitors
title Fabrication of hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam as high–rate electrodes for asymmetric supercapacitors
title_full Fabrication of hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam as high–rate electrodes for asymmetric supercapacitors
title_fullStr Fabrication of hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam as high–rate electrodes for asymmetric supercapacitors
title_full_unstemmed Fabrication of hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam as high–rate electrodes for asymmetric supercapacitors
title_short Fabrication of hierarchical core/shell MgCo(2)O(4)@MnO(2) nanowall arrays on Ni-foam as high–rate electrodes for asymmetric supercapacitors
title_sort fabrication of hierarchical core/shell mgco(2)o(4)@mno(2) nanowall arrays on ni-foam as high–rate electrodes for asymmetric supercapacitors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6715631/
https://www.ncbi.nlm.nih.gov/pubmed/31467302
http://dx.doi.org/10.1038/s41598-019-48931-6
work_keys_str_mv AT xujiasheng fabricationofhierarchicalcoreshellmgco2o4mno2nanowallarraysonnifoamashighrateelectrodesforasymmetricsupercapacitors
AT wanglin fabricationofhierarchicalcoreshellmgco2o4mno2nanowallarraysonnifoamashighrateelectrodesforasymmetricsupercapacitors

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