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Manipulating Li(2)S Redox Kinetics and Lithium Dendrites by Core–Shell Catalysts under High Sulfur Loading and Lean‐Electrolyte Conditions
For practical lithium–sulfur batteries (LSBs), the high sulfur loading and lean‐electrolyte are necessary conditions to achieve the high energy density. However, such extreme conditions will cause serious battery performance fading, due to the uncontrolled deposition of Li(2)S and lithium dendrite g...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10190580/ https://www.ncbi.nlm.nih.gov/pubmed/36932885 http://dx.doi.org/10.1002/advs.202207442 |
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author | Zhen, Mengmeng Li, Kaifeng Liu, Mingyang |
author_facet | Zhen, Mengmeng Li, Kaifeng Liu, Mingyang |
author_sort | Zhen, Mengmeng |
collection | PubMed |
description | For practical lithium–sulfur batteries (LSBs), the high sulfur loading and lean‐electrolyte are necessary conditions to achieve the high energy density. However, such extreme conditions will cause serious battery performance fading, due to the uncontrolled deposition of Li(2)S and lithium dendrite growth. Herein, the tiny Co nanoparticles embedded N‐doped carbon@Co(9)S(8) core–shell material (CoNC@Co(9)S(8)NC) is designed to address these challenges. The Co(9)S(8)NC‐shell effectively captures lithium polysulfides (LiPSs) and electrolyte, and suppresses the lithium dendrite growth. The CoNC‐core not only improves electronic conductivity, but also promotes Li(+) diffusion as well as accelerates Li(2)S deposition/decomposition. Consequently, the cell with CoNC@Co(9)S(8)NC modified separator delivers a high specific capacity of 700 mAh g(−1) with a low‐capacity decay rate of 0.035% per cycle at 1.0 C after 750 cycles under a sulfur loading of 3.2 mg cm(−2) and a E/S ratio of 12 µL mg(−1), and a high initial areal capacity of 9.6 mAh cm(−2) under a high sulfur loading of 8.8 mg cm(−2) and a low E/S ratio of 4.5 µL mg(−1). Besides, the CoNC@Co(9)S(8)NC exhibits an ultralow overpotential fluctuation of 11 mV at a current density of 0.5 mA cm(–2) after 1000 h during a continuous Li plating/striping process. |
format | Online Article Text |
id | pubmed-10190580 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-101905802023-05-18 Manipulating Li(2)S Redox Kinetics and Lithium Dendrites by Core–Shell Catalysts under High Sulfur Loading and Lean‐Electrolyte Conditions Zhen, Mengmeng Li, Kaifeng Liu, Mingyang Adv Sci (Weinh) Research Articles For practical lithium–sulfur batteries (LSBs), the high sulfur loading and lean‐electrolyte are necessary conditions to achieve the high energy density. However, such extreme conditions will cause serious battery performance fading, due to the uncontrolled deposition of Li(2)S and lithium dendrite growth. Herein, the tiny Co nanoparticles embedded N‐doped carbon@Co(9)S(8) core–shell material (CoNC@Co(9)S(8)NC) is designed to address these challenges. The Co(9)S(8)NC‐shell effectively captures lithium polysulfides (LiPSs) and electrolyte, and suppresses the lithium dendrite growth. The CoNC‐core not only improves electronic conductivity, but also promotes Li(+) diffusion as well as accelerates Li(2)S deposition/decomposition. Consequently, the cell with CoNC@Co(9)S(8)NC modified separator delivers a high specific capacity of 700 mAh g(−1) with a low‐capacity decay rate of 0.035% per cycle at 1.0 C after 750 cycles under a sulfur loading of 3.2 mg cm(−2) and a E/S ratio of 12 µL mg(−1), and a high initial areal capacity of 9.6 mAh cm(−2) under a high sulfur loading of 8.8 mg cm(−2) and a low E/S ratio of 4.5 µL mg(−1). Besides, the CoNC@Co(9)S(8)NC exhibits an ultralow overpotential fluctuation of 11 mV at a current density of 0.5 mA cm(–2) after 1000 h during a continuous Li plating/striping process. John Wiley and Sons Inc. 2023-03-18 /pmc/articles/PMC10190580/ /pubmed/36932885 http://dx.doi.org/10.1002/advs.202207442 Text en © 2023 The Authors. Advanced Science published by Wiley‐VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Zhen, Mengmeng Li, Kaifeng Liu, Mingyang Manipulating Li(2)S Redox Kinetics and Lithium Dendrites by Core–Shell Catalysts under High Sulfur Loading and Lean‐Electrolyte Conditions |
title | Manipulating Li(2)S Redox Kinetics and Lithium Dendrites by Core–Shell Catalysts under High Sulfur Loading and Lean‐Electrolyte Conditions |
title_full | Manipulating Li(2)S Redox Kinetics and Lithium Dendrites by Core–Shell Catalysts under High Sulfur Loading and Lean‐Electrolyte Conditions |
title_fullStr | Manipulating Li(2)S Redox Kinetics and Lithium Dendrites by Core–Shell Catalysts under High Sulfur Loading and Lean‐Electrolyte Conditions |
title_full_unstemmed | Manipulating Li(2)S Redox Kinetics and Lithium Dendrites by Core–Shell Catalysts under High Sulfur Loading and Lean‐Electrolyte Conditions |
title_short | Manipulating Li(2)S Redox Kinetics and Lithium Dendrites by Core–Shell Catalysts under High Sulfur Loading and Lean‐Electrolyte Conditions |
title_sort | manipulating li(2)s redox kinetics and lithium dendrites by core–shell catalysts under high sulfur loading and lean‐electrolyte conditions |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10190580/ https://www.ncbi.nlm.nih.gov/pubmed/36932885 http://dx.doi.org/10.1002/advs.202207442 |
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