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MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries

Lithium–sulfur batteries are considered to be promising energy storage devices owing to their high energy density, relatively low price and abundant resources. However, the low utilization of insulated active materials and shuttle effect have severely hindered the further development of lithium–sulf...

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Autores principales: Wang, Yasai, Feng, Guilin, Wang, Yang, Wu, Zhenguo, Chen, Yanxiao, Guo, Xiaodong, Zhong, Benhe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054241/
https://www.ncbi.nlm.nih.gov/pubmed/35520417
http://dx.doi.org/10.1039/d0ra02102d
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author Wang, Yasai
Feng, Guilin
Wang, Yang
Wu, Zhenguo
Chen, Yanxiao
Guo, Xiaodong
Zhong, Benhe
author_facet Wang, Yasai
Feng, Guilin
Wang, Yang
Wu, Zhenguo
Chen, Yanxiao
Guo, Xiaodong
Zhong, Benhe
author_sort Wang, Yasai
collection PubMed
description Lithium–sulfur batteries are considered to be promising energy storage devices owing to their high energy density, relatively low price and abundant resources. However, the low utilization of insulated active materials and shuttle effect have severely hindered the further development of lithium–sulfur batteries. Herein, MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon have been synthesized by liquid-phase reaction followed by an annealing process and used as a sulfur host. The nitrogen-doped carbon matrix improves electrical conductivity and provides pathways for smooth electron and Li ion transfer to uniformly dispersed sulfur. Meanwhile, MoO(2) nanoparticles can absorb polysulfide ions by forming strong chemical bonds, which can effectively alleviate the polysulfide shuttling effect. These results showed a good rate performance: 1361, 1071, 925, 815 and 782 mA h g(−1) at the current densities of 0.1, 0.2, 0.5, 1 and 2 A g(−1), and capacity retention of 85% after 300 cycles at 1 A g(−1). The excellent performance was due to the synergistic effects of the polar MoO(2) and nitrogen-doped carbon matrix, which can effectively restrain and reutilize active materials by absorbing polysulfides and catalyzing the transformation of polysulfides.
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spelling pubmed-90542412022-05-04 MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries Wang, Yasai Feng, Guilin Wang, Yang Wu, Zhenguo Chen, Yanxiao Guo, Xiaodong Zhong, Benhe RSC Adv Chemistry Lithium–sulfur batteries are considered to be promising energy storage devices owing to their high energy density, relatively low price and abundant resources. However, the low utilization of insulated active materials and shuttle effect have severely hindered the further development of lithium–sulfur batteries. Herein, MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon have been synthesized by liquid-phase reaction followed by an annealing process and used as a sulfur host. The nitrogen-doped carbon matrix improves electrical conductivity and provides pathways for smooth electron and Li ion transfer to uniformly dispersed sulfur. Meanwhile, MoO(2) nanoparticles can absorb polysulfide ions by forming strong chemical bonds, which can effectively alleviate the polysulfide shuttling effect. These results showed a good rate performance: 1361, 1071, 925, 815 and 782 mA h g(−1) at the current densities of 0.1, 0.2, 0.5, 1 and 2 A g(−1), and capacity retention of 85% after 300 cycles at 1 A g(−1). The excellent performance was due to the synergistic effects of the polar MoO(2) and nitrogen-doped carbon matrix, which can effectively restrain and reutilize active materials by absorbing polysulfides and catalyzing the transformation of polysulfides. The Royal Society of Chemistry 2020-05-27 /pmc/articles/PMC9054241/ /pubmed/35520417 http://dx.doi.org/10.1039/d0ra02102d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wang, Yasai
Feng, Guilin
Wang, Yang
Wu, Zhenguo
Chen, Yanxiao
Guo, Xiaodong
Zhong, Benhe
MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries
title MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries
title_full MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries
title_fullStr MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries
title_full_unstemmed MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries
title_short MoO(2) nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries
title_sort moo(2) nanoparticles embedded in n-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054241/
https://www.ncbi.nlm.nih.gov/pubmed/35520417
http://dx.doi.org/10.1039/d0ra02102d
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