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Hierarchical Micro‐Nanoclusters of Bimetallic Layered Hydroxide Polyhedrons as Advanced Sulfur Reservoir for High‐Performance Lithium–Sulfur Batteries

Rational construction of sulfur electrodes is essential in pursuit of practically viable lithium–sulfur (Li–S) batteries. Herein, bimetallic NiCo‐layered double hydroxide (NiCo‐LDH) with a unique hierarchical micro‐nano architecture is developed as an advanced sulfur reservoir for Li–S batteries. Co...

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Autores principales: Qiu, Weilong, Li, Gaoran, Luo, Dan, Zhang, Yongguang, Zhao, Yan, Zhou, Guofu, Shui, Lingling, Wang, Xin, Chen, Zhongwei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8025003/
https://www.ncbi.nlm.nih.gov/pubmed/33854890
http://dx.doi.org/10.1002/advs.202003400
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author Qiu, Weilong
Li, Gaoran
Luo, Dan
Zhang, Yongguang
Zhao, Yan
Zhou, Guofu
Shui, Lingling
Wang, Xin
Chen, Zhongwei
author_facet Qiu, Weilong
Li, Gaoran
Luo, Dan
Zhang, Yongguang
Zhao, Yan
Zhou, Guofu
Shui, Lingling
Wang, Xin
Chen, Zhongwei
author_sort Qiu, Weilong
collection PubMed
description Rational construction of sulfur electrodes is essential in pursuit of practically viable lithium–sulfur (Li–S) batteries. Herein, bimetallic NiCo‐layered double hydroxide (NiCo‐LDH) with a unique hierarchical micro‐nano architecture is developed as an advanced sulfur reservoir for Li–S batteries. Compared with the monometallic Co‐layered double hydroxide (Co‐LDH) counterpart, the bimetallic configuration realizes much enriched, miniaturized, and vertically aligned LDH nanosheets assembled in hollow polyhedral nanoarchitecture, which geometrically benefits the interface exposure for host–guest interactions. Beyond that, the introduction of secondary metal intensifies the chemical interactions between layered double hydroxide (LDH) and sulfur species, which implements strong sulfur immobilization and catalyzation for rapid and durable sulfur electrochemistry. Furthermore, the favorable NiCo‐LDH is architecturally upgraded into closely packed micro‐nano clusters with facilitated long‐range electron/ion conduction and robust structural integrity. Due to these attributes, the corresponding Li–S cells realize excellent cyclability over 800 cycles with a minimum capacity fading of 0.04% per cycle and good rate capability up to 2 C. Moreover, highly reversible areal capacity of 4.3 mAh cm(−2) can be achieved under a raised sulfur loading of 5.5 mg cm(−2). This work provides not only an effective architectural design but also a deepened understanding on bimetallic LDH sulfur reservoir for high‐performance Li–S batteries.
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spelling pubmed-80250032021-04-13 Hierarchical Micro‐Nanoclusters of Bimetallic Layered Hydroxide Polyhedrons as Advanced Sulfur Reservoir for High‐Performance Lithium–Sulfur Batteries Qiu, Weilong Li, Gaoran Luo, Dan Zhang, Yongguang Zhao, Yan Zhou, Guofu Shui, Lingling Wang, Xin Chen, Zhongwei Adv Sci (Weinh) Full Papers Rational construction of sulfur electrodes is essential in pursuit of practically viable lithium–sulfur (Li–S) batteries. Herein, bimetallic NiCo‐layered double hydroxide (NiCo‐LDH) with a unique hierarchical micro‐nano architecture is developed as an advanced sulfur reservoir for Li–S batteries. Compared with the monometallic Co‐layered double hydroxide (Co‐LDH) counterpart, the bimetallic configuration realizes much enriched, miniaturized, and vertically aligned LDH nanosheets assembled in hollow polyhedral nanoarchitecture, which geometrically benefits the interface exposure for host–guest interactions. Beyond that, the introduction of secondary metal intensifies the chemical interactions between layered double hydroxide (LDH) and sulfur species, which implements strong sulfur immobilization and catalyzation for rapid and durable sulfur electrochemistry. Furthermore, the favorable NiCo‐LDH is architecturally upgraded into closely packed micro‐nano clusters with facilitated long‐range electron/ion conduction and robust structural integrity. Due to these attributes, the corresponding Li–S cells realize excellent cyclability over 800 cycles with a minimum capacity fading of 0.04% per cycle and good rate capability up to 2 C. Moreover, highly reversible areal capacity of 4.3 mAh cm(−2) can be achieved under a raised sulfur loading of 5.5 mg cm(−2). This work provides not only an effective architectural design but also a deepened understanding on bimetallic LDH sulfur reservoir for high‐performance Li–S batteries. John Wiley and Sons Inc. 2021-01-29 /pmc/articles/PMC8025003/ /pubmed/33854890 http://dx.doi.org/10.1002/advs.202003400 Text en © 2021 The Authors. Published by Wiley‐VCH GmbH This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Full Papers
Qiu, Weilong
Li, Gaoran
Luo, Dan
Zhang, Yongguang
Zhao, Yan
Zhou, Guofu
Shui, Lingling
Wang, Xin
Chen, Zhongwei
Hierarchical Micro‐Nanoclusters of Bimetallic Layered Hydroxide Polyhedrons as Advanced Sulfur Reservoir for High‐Performance Lithium–Sulfur Batteries
title Hierarchical Micro‐Nanoclusters of Bimetallic Layered Hydroxide Polyhedrons as Advanced Sulfur Reservoir for High‐Performance Lithium–Sulfur Batteries
title_full Hierarchical Micro‐Nanoclusters of Bimetallic Layered Hydroxide Polyhedrons as Advanced Sulfur Reservoir for High‐Performance Lithium–Sulfur Batteries
title_fullStr Hierarchical Micro‐Nanoclusters of Bimetallic Layered Hydroxide Polyhedrons as Advanced Sulfur Reservoir for High‐Performance Lithium–Sulfur Batteries
title_full_unstemmed Hierarchical Micro‐Nanoclusters of Bimetallic Layered Hydroxide Polyhedrons as Advanced Sulfur Reservoir for High‐Performance Lithium–Sulfur Batteries
title_short Hierarchical Micro‐Nanoclusters of Bimetallic Layered Hydroxide Polyhedrons as Advanced Sulfur Reservoir for High‐Performance Lithium–Sulfur Batteries
title_sort hierarchical micro‐nanoclusters of bimetallic layered hydroxide polyhedrons as advanced sulfur reservoir for high‐performance lithium–sulfur batteries
topic Full Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8025003/
https://www.ncbi.nlm.nih.gov/pubmed/33854890
http://dx.doi.org/10.1002/advs.202003400
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