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Beaded CoSe(2)-C Nanofibers for High-Performance Lithium–Sulfur Batteries
Lithium–sulfur (Li-S) batteries are regarded as highly promising energy storage devices due to their high theoretical specific capacity and high energy density. Nevertheless, the commercial application of Li-S batteries is still restricted by poor electrochemical performance. Herein, beaded nanofibe...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10489726/ https://www.ncbi.nlm.nih.gov/pubmed/37686998 http://dx.doi.org/10.3390/nano13172492 |
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author | Xu, Jing Ao, Juan Xie, Yonghui Zhou, Yumei Wang, Xinghui |
author_facet | Xu, Jing Ao, Juan Xie, Yonghui Zhou, Yumei Wang, Xinghui |
author_sort | Xu, Jing |
collection | PubMed |
description | Lithium–sulfur (Li-S) batteries are regarded as highly promising energy storage devices due to their high theoretical specific capacity and high energy density. Nevertheless, the commercial application of Li-S batteries is still restricted by poor electrochemical performance. Herein, beaded nanofibers (BNFs) consisting of carbon and CoSe(2) nanoparticles (CoSe(2)/C BNFs) were prepared by electrospinning combined with carbonization and selenization. Benefitting from the synergistic effect of physical adsorption and chemical catalysis, the CoSe(2)/C BNFs can effectively inhibit the shuttle effect of lithium polysulfides and improve the rate performance and cycle stability of Li-S batteries. The three-dimensional conductive network provides a fast electron and ion transport pathway as well as sufficient space for alleviating the volume change. CoSe(2) can not only effectively adsorb the lithium polysulfides but also accelerate their conversion reaction. The CoSe(2)/C BNFs-S cathode has a high reversible discharge specific capacity of 919.2 mAh g(−1) at 0.1 C and presents excellent cycle stability with a low-capacity decay rate of 0.05% per cycle for 600 cycles at 1 C. The combination of the beaded carbon nanofibers and polar metal selenides sheds light on designing high-performance sulfur-based cathodes. |
format | Online Article Text |
id | pubmed-10489726 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-104897262023-09-09 Beaded CoSe(2)-C Nanofibers for High-Performance Lithium–Sulfur Batteries Xu, Jing Ao, Juan Xie, Yonghui Zhou, Yumei Wang, Xinghui Nanomaterials (Basel) Article Lithium–sulfur (Li-S) batteries are regarded as highly promising energy storage devices due to their high theoretical specific capacity and high energy density. Nevertheless, the commercial application of Li-S batteries is still restricted by poor electrochemical performance. Herein, beaded nanofibers (BNFs) consisting of carbon and CoSe(2) nanoparticles (CoSe(2)/C BNFs) were prepared by electrospinning combined with carbonization and selenization. Benefitting from the synergistic effect of physical adsorption and chemical catalysis, the CoSe(2)/C BNFs can effectively inhibit the shuttle effect of lithium polysulfides and improve the rate performance and cycle stability of Li-S batteries. The three-dimensional conductive network provides a fast electron and ion transport pathway as well as sufficient space for alleviating the volume change. CoSe(2) can not only effectively adsorb the lithium polysulfides but also accelerate their conversion reaction. The CoSe(2)/C BNFs-S cathode has a high reversible discharge specific capacity of 919.2 mAh g(−1) at 0.1 C and presents excellent cycle stability with a low-capacity decay rate of 0.05% per cycle for 600 cycles at 1 C. The combination of the beaded carbon nanofibers and polar metal selenides sheds light on designing high-performance sulfur-based cathodes. MDPI 2023-09-04 /pmc/articles/PMC10489726/ /pubmed/37686998 http://dx.doi.org/10.3390/nano13172492 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Xu, Jing Ao, Juan Xie, Yonghui Zhou, Yumei Wang, Xinghui Beaded CoSe(2)-C Nanofibers for High-Performance Lithium–Sulfur Batteries |
title | Beaded CoSe(2)-C Nanofibers for High-Performance Lithium–Sulfur Batteries |
title_full | Beaded CoSe(2)-C Nanofibers for High-Performance Lithium–Sulfur Batteries |
title_fullStr | Beaded CoSe(2)-C Nanofibers for High-Performance Lithium–Sulfur Batteries |
title_full_unstemmed | Beaded CoSe(2)-C Nanofibers for High-Performance Lithium–Sulfur Batteries |
title_short | Beaded CoSe(2)-C Nanofibers for High-Performance Lithium–Sulfur Batteries |
title_sort | beaded cose(2)-c nanofibers for high-performance lithium–sulfur batteries |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10489726/ https://www.ncbi.nlm.nih.gov/pubmed/37686998 http://dx.doi.org/10.3390/nano13172492 |
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