Cargando…
Bottom-Up Catalytic Approach towards Nitrogen-Enriched Mesoporous Carbons/Sulfur Composites for Superior Li-S Cathodes
We demonstrate a sustainable and efficient approach to produce high performance sulfur/carbon composite cathodes via a bottom-up catalytic approach. The selective oxidation of H(2)S by a nitrogen-enriched mesoporous carbon catalyst can produce elemental sulfur as a by-product which in-situ deposit o...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2013
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3788363/ https://www.ncbi.nlm.nih.gov/pubmed/24084754 http://dx.doi.org/10.1038/srep02823 |
_version_ | 1782286329824935936 |
---|---|
author | Sun, Fugen Wang, Jitong Chen, Huichao Qiao, Wenming Ling, Licheng Long, Donghui |
author_facet | Sun, Fugen Wang, Jitong Chen, Huichao Qiao, Wenming Ling, Licheng Long, Donghui |
author_sort | Sun, Fugen |
collection | PubMed |
description | We demonstrate a sustainable and efficient approach to produce high performance sulfur/carbon composite cathodes via a bottom-up catalytic approach. The selective oxidation of H(2)S by a nitrogen-enriched mesoporous carbon catalyst can produce elemental sulfur as a by-product which in-situ deposit onto the carbon framework. Due to the metal-free catalytic characteristic and high catalytic selectivity, the resulting sulfur/carbon composites have almost no impurities that thus can be used as cathode materials with compromising battery performance. The layer-by-layer sulfur deposition allows atomic sulfur binding strongly with carbon framework, providing efficient immobilization of sulfur. The nitrogen atoms doped on the carbon framework can increase the surface interactions with polysulfides, leading to the improvement in the trapping of polysulfides. Thus, the composites exhibit a reversible capacity of 939 mAh g(−1) after 100 cycles at 0.2 C and an excellent rate capability of 527 mAh g(−1) at 5 C after 70 cycles. |
format | Online Article Text |
id | pubmed-3788363 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-37883632013-10-18 Bottom-Up Catalytic Approach towards Nitrogen-Enriched Mesoporous Carbons/Sulfur Composites for Superior Li-S Cathodes Sun, Fugen Wang, Jitong Chen, Huichao Qiao, Wenming Ling, Licheng Long, Donghui Sci Rep Article We demonstrate a sustainable and efficient approach to produce high performance sulfur/carbon composite cathodes via a bottom-up catalytic approach. The selective oxidation of H(2)S by a nitrogen-enriched mesoporous carbon catalyst can produce elemental sulfur as a by-product which in-situ deposit onto the carbon framework. Due to the metal-free catalytic characteristic and high catalytic selectivity, the resulting sulfur/carbon composites have almost no impurities that thus can be used as cathode materials with compromising battery performance. The layer-by-layer sulfur deposition allows atomic sulfur binding strongly with carbon framework, providing efficient immobilization of sulfur. The nitrogen atoms doped on the carbon framework can increase the surface interactions with polysulfides, leading to the improvement in the trapping of polysulfides. Thus, the composites exhibit a reversible capacity of 939 mAh g(−1) after 100 cycles at 0.2 C and an excellent rate capability of 527 mAh g(−1) at 5 C after 70 cycles. Nature Publishing Group 2013-10-02 /pmc/articles/PMC3788363/ /pubmed/24084754 http://dx.doi.org/10.1038/srep02823 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/3.0/ This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Article Sun, Fugen Wang, Jitong Chen, Huichao Qiao, Wenming Ling, Licheng Long, Donghui Bottom-Up Catalytic Approach towards Nitrogen-Enriched Mesoporous Carbons/Sulfur Composites for Superior Li-S Cathodes |
title | Bottom-Up Catalytic Approach towards Nitrogen-Enriched Mesoporous Carbons/Sulfur Composites for Superior Li-S Cathodes |
title_full | Bottom-Up Catalytic Approach towards Nitrogen-Enriched Mesoporous Carbons/Sulfur Composites for Superior Li-S Cathodes |
title_fullStr | Bottom-Up Catalytic Approach towards Nitrogen-Enriched Mesoporous Carbons/Sulfur Composites for Superior Li-S Cathodes |
title_full_unstemmed | Bottom-Up Catalytic Approach towards Nitrogen-Enriched Mesoporous Carbons/Sulfur Composites for Superior Li-S Cathodes |
title_short | Bottom-Up Catalytic Approach towards Nitrogen-Enriched Mesoporous Carbons/Sulfur Composites for Superior Li-S Cathodes |
title_sort | bottom-up catalytic approach towards nitrogen-enriched mesoporous carbons/sulfur composites for superior li-s cathodes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3788363/ https://www.ncbi.nlm.nih.gov/pubmed/24084754 http://dx.doi.org/10.1038/srep02823 |
work_keys_str_mv | AT sunfugen bottomupcatalyticapproachtowardsnitrogenenrichedmesoporouscarbonssulfurcompositesforsuperiorliscathodes AT wangjitong bottomupcatalyticapproachtowardsnitrogenenrichedmesoporouscarbonssulfurcompositesforsuperiorliscathodes AT chenhuichao bottomupcatalyticapproachtowardsnitrogenenrichedmesoporouscarbonssulfurcompositesforsuperiorliscathodes AT qiaowenming bottomupcatalyticapproachtowardsnitrogenenrichedmesoporouscarbonssulfurcompositesforsuperiorliscathodes AT linglicheng bottomupcatalyticapproachtowardsnitrogenenrichedmesoporouscarbonssulfurcompositesforsuperiorliscathodes AT longdonghui bottomupcatalyticapproachtowardsnitrogenenrichedmesoporouscarbonssulfurcompositesforsuperiorliscathodes |