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Metal chalcogenide hollow polar bipyramid prisms as efficient sulfur hosts for Na-S batteries

Sodium sulfur batteries require efficient sulfur hosts that can capture soluble polysulfides and enable fast reduction kinetics. Herein, we design hollow, polar and catalytic bipyramid prisms of cobalt sulfide as efficient sulfur host for sodium sulfur batteries. Cobalt sulfide has interwoven surfac...

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Autores principales: Aslam, Muhammad Kashif, Seymour, Ieuan D., Katyal, Naman, Li, Sha, Yang, Tingting, Bao, Shu-juan, Henkelman, Graeme, Xu, Maowen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7568557/
https://www.ncbi.nlm.nih.gov/pubmed/33067473
http://dx.doi.org/10.1038/s41467-020-19078-0
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author Aslam, Muhammad Kashif
Seymour, Ieuan D.
Katyal, Naman
Li, Sha
Yang, Tingting
Bao, Shu-juan
Henkelman, Graeme
Xu, Maowen
author_facet Aslam, Muhammad Kashif
Seymour, Ieuan D.
Katyal, Naman
Li, Sha
Yang, Tingting
Bao, Shu-juan
Henkelman, Graeme
Xu, Maowen
author_sort Aslam, Muhammad Kashif
collection PubMed
description Sodium sulfur batteries require efficient sulfur hosts that can capture soluble polysulfides and enable fast reduction kinetics. Herein, we design hollow, polar and catalytic bipyramid prisms of cobalt sulfide as efficient sulfur host for sodium sulfur batteries. Cobalt sulfide has interwoven surfaces with wide internal spaces that can accommodate sodium polysulfides and withstand volumetric expansion. Furthermore, results from in/ex-situ characterization techniques and density functional theory calculations support the significance of the polar and catalytic properties of cobalt sulfide as hosts for soluble sodium polysulfides that reduce the shuttle effect and display excellent electrochemical performance. The polar catalytic bipyramid prisms sulfur@cobalt sulfide composite exhibits a high capacity of 755 mAh g(−1) in the second discharge and 675 mAh g(−1) after 800 charge/discharge cycles, with an ultralow capacity decay rate of 0.0126 % at a high current density of 0.5 C. Additionally, at a high mass loading of 9.1 mg cm(−2), sulfur@cobalt sulfide shows high capacity of 545 mAh g(−1) at a current density of 0.5 C. This study demonstrates a hollow, polar, and catalytic sulfur host with a unique structure that can capture sodium polysulfides and speed up the reduction reaction of long chain sodium polysulfides to solid small chain polysulfides, which results in excellent electrochemical performance for sodium-sulfur batteries.
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spelling pubmed-75685572020-10-21 Metal chalcogenide hollow polar bipyramid prisms as efficient sulfur hosts for Na-S batteries Aslam, Muhammad Kashif Seymour, Ieuan D. Katyal, Naman Li, Sha Yang, Tingting Bao, Shu-juan Henkelman, Graeme Xu, Maowen Nat Commun Article Sodium sulfur batteries require efficient sulfur hosts that can capture soluble polysulfides and enable fast reduction kinetics. Herein, we design hollow, polar and catalytic bipyramid prisms of cobalt sulfide as efficient sulfur host for sodium sulfur batteries. Cobalt sulfide has interwoven surfaces with wide internal spaces that can accommodate sodium polysulfides and withstand volumetric expansion. Furthermore, results from in/ex-situ characterization techniques and density functional theory calculations support the significance of the polar and catalytic properties of cobalt sulfide as hosts for soluble sodium polysulfides that reduce the shuttle effect and display excellent electrochemical performance. The polar catalytic bipyramid prisms sulfur@cobalt sulfide composite exhibits a high capacity of 755 mAh g(−1) in the second discharge and 675 mAh g(−1) after 800 charge/discharge cycles, with an ultralow capacity decay rate of 0.0126 % at a high current density of 0.5 C. Additionally, at a high mass loading of 9.1 mg cm(−2), sulfur@cobalt sulfide shows high capacity of 545 mAh g(−1) at a current density of 0.5 C. This study demonstrates a hollow, polar, and catalytic sulfur host with a unique structure that can capture sodium polysulfides and speed up the reduction reaction of long chain sodium polysulfides to solid small chain polysulfides, which results in excellent electrochemical performance for sodium-sulfur batteries. Nature Publishing Group UK 2020-10-16 /pmc/articles/PMC7568557/ /pubmed/33067473 http://dx.doi.org/10.1038/s41467-020-19078-0 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Aslam, Muhammad Kashif
Seymour, Ieuan D.
Katyal, Naman
Li, Sha
Yang, Tingting
Bao, Shu-juan
Henkelman, Graeme
Xu, Maowen
Metal chalcogenide hollow polar bipyramid prisms as efficient sulfur hosts for Na-S batteries
title Metal chalcogenide hollow polar bipyramid prisms as efficient sulfur hosts for Na-S batteries
title_full Metal chalcogenide hollow polar bipyramid prisms as efficient sulfur hosts for Na-S batteries
title_fullStr Metal chalcogenide hollow polar bipyramid prisms as efficient sulfur hosts for Na-S batteries
title_full_unstemmed Metal chalcogenide hollow polar bipyramid prisms as efficient sulfur hosts for Na-S batteries
title_short Metal chalcogenide hollow polar bipyramid prisms as efficient sulfur hosts for Na-S batteries
title_sort metal chalcogenide hollow polar bipyramid prisms as efficient sulfur hosts for na-s batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7568557/
https://www.ncbi.nlm.nih.gov/pubmed/33067473
http://dx.doi.org/10.1038/s41467-020-19078-0
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