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First-principles investigation on multi-magnesium sulfide and magnesium sulfide clusters in magnesium-sulfide batteries

Because of the abundance of magnesium and sulfur and their low cost, the development of magnesium sulfur batteries is very promising. In particular, the battery performance of nanoscale (MgS)(n) clusters is much better than that of bulk sized MgS. However, the structures, stability, and properties o...

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Autores principales: Jiang, Xiaoli, Wu, Jianbao, Zhang, Panyu, Jiang, Liyuan, Lu, Shuhan, Zhao, Xinxin, Yin, ZhiXiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335111/
https://www.ncbi.nlm.nih.gov/pubmed/37441038
http://dx.doi.org/10.1039/d3ra03165a
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author Jiang, Xiaoli
Wu, Jianbao
Zhang, Panyu
Jiang, Liyuan
Lu, Shuhan
Zhao, Xinxin
Yin, ZhiXiang
author_facet Jiang, Xiaoli
Wu, Jianbao
Zhang, Panyu
Jiang, Liyuan
Lu, Shuhan
Zhao, Xinxin
Yin, ZhiXiang
author_sort Jiang, Xiaoli
collection PubMed
description Because of the abundance of magnesium and sulfur and their low cost, the development of magnesium sulfur batteries is very promising. In particular, the battery performance of nanoscale (MgS)(n) clusters is much better than that of bulk sized MgS. However, the structures, stability, and properties of Mg(x)S(y) and (MgS)(n) clusters, which are very important to improve the performance of Mg–S batteries, are still unexplored. Herein, the most stable structures of Mg(x)S(y) (x = 1–8, y = 1–8) and (MgS)(n) (n = 1–10) are reliably determined using the structure search method and density functional theory to calculate. According to calculation results, MgS(3) and Mg(6)S(8) may not exist in the actual charging and discharging products of magnesium sulfide batteries. The (MgS)(n) (n ≥ 5) clusters exhibit intriguing cage-like structures, which are favorable for eliminating dangling bonds and enhancing structural stability. Compared to the MgS monomer, each sulfur atom in the clusters is coordinated with more magnesium atoms, thus lengthening the Mg–S bond length and decreasing the Mg–S bond activation energy. Notably, with the increase of dielectric constant of electrolyte solvent, compared to the DME (ε = 7.2), THF (ε = 7.6) and C(2)H(4)Cl(2) (ε = 10.0), Mg(x)S(y) and (MgS)(n) clusters are most stable in the environment of C(3)H(6)O (ε = 20.7). It can delay the transformation of magnesium polysulfide to the final product MgS, which is conducive to improving the performance of Mg–S batteries. The predicted characteristic peaks of infrared and Raman spectra provide useful information for in situ experimental investigation. Our work represents a significant step towards understanding (MgS)(n) clusters and improving the performance of Mg–S batteries.
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spelling pubmed-103351112023-07-12 First-principles investigation on multi-magnesium sulfide and magnesium sulfide clusters in magnesium-sulfide batteries Jiang, Xiaoli Wu, Jianbao Zhang, Panyu Jiang, Liyuan Lu, Shuhan Zhao, Xinxin Yin, ZhiXiang RSC Adv Chemistry Because of the abundance of magnesium and sulfur and their low cost, the development of magnesium sulfur batteries is very promising. In particular, the battery performance of nanoscale (MgS)(n) clusters is much better than that of bulk sized MgS. However, the structures, stability, and properties of Mg(x)S(y) and (MgS)(n) clusters, which are very important to improve the performance of Mg–S batteries, are still unexplored. Herein, the most stable structures of Mg(x)S(y) (x = 1–8, y = 1–8) and (MgS)(n) (n = 1–10) are reliably determined using the structure search method and density functional theory to calculate. According to calculation results, MgS(3) and Mg(6)S(8) may not exist in the actual charging and discharging products of magnesium sulfide batteries. The (MgS)(n) (n ≥ 5) clusters exhibit intriguing cage-like structures, which are favorable for eliminating dangling bonds and enhancing structural stability. Compared to the MgS monomer, each sulfur atom in the clusters is coordinated with more magnesium atoms, thus lengthening the Mg–S bond length and decreasing the Mg–S bond activation energy. Notably, with the increase of dielectric constant of electrolyte solvent, compared to the DME (ε = 7.2), THF (ε = 7.6) and C(2)H(4)Cl(2) (ε = 10.0), Mg(x)S(y) and (MgS)(n) clusters are most stable in the environment of C(3)H(6)O (ε = 20.7). It can delay the transformation of magnesium polysulfide to the final product MgS, which is conducive to improving the performance of Mg–S batteries. The predicted characteristic peaks of infrared and Raman spectra provide useful information for in situ experimental investigation. Our work represents a significant step towards understanding (MgS)(n) clusters and improving the performance of Mg–S batteries. The Royal Society of Chemistry 2023-07-11 /pmc/articles/PMC10335111/ /pubmed/37441038 http://dx.doi.org/10.1039/d3ra03165a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Jiang, Xiaoli
Wu, Jianbao
Zhang, Panyu
Jiang, Liyuan
Lu, Shuhan
Zhao, Xinxin
Yin, ZhiXiang
First-principles investigation on multi-magnesium sulfide and magnesium sulfide clusters in magnesium-sulfide batteries
title First-principles investigation on multi-magnesium sulfide and magnesium sulfide clusters in magnesium-sulfide batteries
title_full First-principles investigation on multi-magnesium sulfide and magnesium sulfide clusters in magnesium-sulfide batteries
title_fullStr First-principles investigation on multi-magnesium sulfide and magnesium sulfide clusters in magnesium-sulfide batteries
title_full_unstemmed First-principles investigation on multi-magnesium sulfide and magnesium sulfide clusters in magnesium-sulfide batteries
title_short First-principles investigation on multi-magnesium sulfide and magnesium sulfide clusters in magnesium-sulfide batteries
title_sort first-principles investigation on multi-magnesium sulfide and magnesium sulfide clusters in magnesium-sulfide batteries
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335111/
https://www.ncbi.nlm.nih.gov/pubmed/37441038
http://dx.doi.org/10.1039/d3ra03165a
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