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Uniform yolk-shell iron sulfide–carbon nanospheres for superior sodium–iron sulfide batteries

Sodium–metal sulfide battery holds great promise for sustainable and cost-effective applications. Nevertheless, achieving high capacity and cycling stability remains a great challenge. Here, uniform yolk-shell iron sulfide–carbon nanospheres have been synthesized as cathode materials for the emergin...

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Autores principales: Wang, Yun-Xiao, Yang, Jianping, Chou, Shu-Lei, Liu, Hua Kun, Zhang, Wei-xian, Zhao, Dongyuan, Dou, Shi Xue
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4846313/
https://www.ncbi.nlm.nih.gov/pubmed/26507613
http://dx.doi.org/10.1038/ncomms9689
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author Wang, Yun-Xiao
Yang, Jianping
Chou, Shu-Lei
Liu, Hua Kun
Zhang, Wei-xian
Zhao, Dongyuan
Dou, Shi Xue
author_facet Wang, Yun-Xiao
Yang, Jianping
Chou, Shu-Lei
Liu, Hua Kun
Zhang, Wei-xian
Zhao, Dongyuan
Dou, Shi Xue
author_sort Wang, Yun-Xiao
collection PubMed
description Sodium–metal sulfide battery holds great promise for sustainable and cost-effective applications. Nevertheless, achieving high capacity and cycling stability remains a great challenge. Here, uniform yolk-shell iron sulfide–carbon nanospheres have been synthesized as cathode materials for the emerging sodium sulfide battery to achieve remarkable capacity of ∼545 mA h g(−1) over 100 cycles at 0.2 C (100 mA g(−1)), delivering ultrahigh energy density of ∼438 Wh kg(−1). The proven conversion reaction between sodium and iron sulfide results in high capacity but severe volume changes. Nanostructural design, including of nanosized iron sulfide yolks (∼170 nm) with porous carbon shells (∼30 nm) and extra void space (∼20 nm) in between, has been used to achieve excellent cycling performance without sacrificing capacity. This sustainable sodium–iron sulfide battery is a promising candidate for stationary energy storage. Furthermore, this spatially confined sulfuration strategy offers a general method for other yolk-shell metal sulfide–carbon composites.
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spelling pubmed-48463132016-05-05 Uniform yolk-shell iron sulfide–carbon nanospheres for superior sodium–iron sulfide batteries Wang, Yun-Xiao Yang, Jianping Chou, Shu-Lei Liu, Hua Kun Zhang, Wei-xian Zhao, Dongyuan Dou, Shi Xue Nat Commun Article Sodium–metal sulfide battery holds great promise for sustainable and cost-effective applications. Nevertheless, achieving high capacity and cycling stability remains a great challenge. Here, uniform yolk-shell iron sulfide–carbon nanospheres have been synthesized as cathode materials for the emerging sodium sulfide battery to achieve remarkable capacity of ∼545 mA h g(−1) over 100 cycles at 0.2 C (100 mA g(−1)), delivering ultrahigh energy density of ∼438 Wh kg(−1). The proven conversion reaction between sodium and iron sulfide results in high capacity but severe volume changes. Nanostructural design, including of nanosized iron sulfide yolks (∼170 nm) with porous carbon shells (∼30 nm) and extra void space (∼20 nm) in between, has been used to achieve excellent cycling performance without sacrificing capacity. This sustainable sodium–iron sulfide battery is a promising candidate for stationary energy storage. Furthermore, this spatially confined sulfuration strategy offers a general method for other yolk-shell metal sulfide–carbon composites. Nature Publishing Group 2015-10-28 /pmc/articles/PMC4846313/ /pubmed/26507613 http://dx.doi.org/10.1038/ncomms9689 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Wang, Yun-Xiao
Yang, Jianping
Chou, Shu-Lei
Liu, Hua Kun
Zhang, Wei-xian
Zhao, Dongyuan
Dou, Shi Xue
Uniform yolk-shell iron sulfide–carbon nanospheres for superior sodium–iron sulfide batteries
title Uniform yolk-shell iron sulfide–carbon nanospheres for superior sodium–iron sulfide batteries
title_full Uniform yolk-shell iron sulfide–carbon nanospheres for superior sodium–iron sulfide batteries
title_fullStr Uniform yolk-shell iron sulfide–carbon nanospheres for superior sodium–iron sulfide batteries
title_full_unstemmed Uniform yolk-shell iron sulfide–carbon nanospheres for superior sodium–iron sulfide batteries
title_short Uniform yolk-shell iron sulfide–carbon nanospheres for superior sodium–iron sulfide batteries
title_sort uniform yolk-shell iron sulfide–carbon nanospheres for superior sodium–iron sulfide batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4846313/
https://www.ncbi.nlm.nih.gov/pubmed/26507613
http://dx.doi.org/10.1038/ncomms9689
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