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3D CNTs/Graphene‐S‐Al(3)Ni(2) Cathodes for High‐Sulfur‐Loading and Long‐Life Lithium–Sulfur Batteries

Lithium–sulfur batteries suffer from poor cycling stability at high areal sulfur loadings (ASLs) mainly because of the infamous shuttle problem and the increasing diffusion distance for ions to diffuse along the vertical direction of the cathode plane. Here, a carbon nanotube (CNT)/graphene (Gra)‐S‐...

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Autores principales: Guo, Zeqing, Nie, Huagui, Yang, Zhi, Hua, Wuxing, Ruan, Chunping, Chan, Dan, Ge, Mengzhan, Chen, Xi'an, Huang, Shaoming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6051211/
https://www.ncbi.nlm.nih.gov/pubmed/30027035
http://dx.doi.org/10.1002/advs.201800026
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author Guo, Zeqing
Nie, Huagui
Yang, Zhi
Hua, Wuxing
Ruan, Chunping
Chan, Dan
Ge, Mengzhan
Chen, Xi'an
Huang, Shaoming
author_facet Guo, Zeqing
Nie, Huagui
Yang, Zhi
Hua, Wuxing
Ruan, Chunping
Chan, Dan
Ge, Mengzhan
Chen, Xi'an
Huang, Shaoming
author_sort Guo, Zeqing
collection PubMed
description Lithium–sulfur batteries suffer from poor cycling stability at high areal sulfur loadings (ASLs) mainly because of the infamous shuttle problem and the increasing diffusion distance for ions to diffuse along the vertical direction of the cathode plane. Here, a carbon nanotube (CNT)/graphene (Gra)‐S‐Al(3)Ni(2) cathode with 3D network structure is designed and prepared. The 3D network configuration and the Al in the Al(3)Ni(2) provide an efficient channel for fast electron and ion transfer in the three dimensions, especially along the vertical direction of the cathode. The introduction of Ni in the Al(3)Ni(2) is able to suppress the shuttle effect via accelerating reaction kinetics of lithium polysulfide species conversion reactions. The CNT/Gra‐S‐Al(3)Ni(2) cathode exhibits ultrahigh cycle‐ability at 1 C over 800 cycles, with a capacity degradation rate of 0.055% per cycle. Additionally, having high ASLs of 3.3 mg cm(−2), the electrode delivers a high reversible areal capacity of 2.05 mA h cm(−2) (622 mA h g(−1)) over 200 cycles at a higher current density of 2.76 mA cm(−2) with high capacity retention of 85.9%. The outstanding discharge performance indicates that the design offers a promising avenue to develop long‐life cycle and high‐sulfur‐loading Li–S batteries.
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spelling pubmed-60512112018-07-19 3D CNTs/Graphene‐S‐Al(3)Ni(2) Cathodes for High‐Sulfur‐Loading and Long‐Life Lithium–Sulfur Batteries Guo, Zeqing Nie, Huagui Yang, Zhi Hua, Wuxing Ruan, Chunping Chan, Dan Ge, Mengzhan Chen, Xi'an Huang, Shaoming Adv Sci (Weinh) Full Papers Lithium–sulfur batteries suffer from poor cycling stability at high areal sulfur loadings (ASLs) mainly because of the infamous shuttle problem and the increasing diffusion distance for ions to diffuse along the vertical direction of the cathode plane. Here, a carbon nanotube (CNT)/graphene (Gra)‐S‐Al(3)Ni(2) cathode with 3D network structure is designed and prepared. The 3D network configuration and the Al in the Al(3)Ni(2) provide an efficient channel for fast electron and ion transfer in the three dimensions, especially along the vertical direction of the cathode. The introduction of Ni in the Al(3)Ni(2) is able to suppress the shuttle effect via accelerating reaction kinetics of lithium polysulfide species conversion reactions. The CNT/Gra‐S‐Al(3)Ni(2) cathode exhibits ultrahigh cycle‐ability at 1 C over 800 cycles, with a capacity degradation rate of 0.055% per cycle. Additionally, having high ASLs of 3.3 mg cm(−2), the electrode delivers a high reversible areal capacity of 2.05 mA h cm(−2) (622 mA h g(−1)) over 200 cycles at a higher current density of 2.76 mA cm(−2) with high capacity retention of 85.9%. The outstanding discharge performance indicates that the design offers a promising avenue to develop long‐life cycle and high‐sulfur‐loading Li–S batteries. John Wiley and Sons Inc. 2018-05-10 /pmc/articles/PMC6051211/ /pubmed/30027035 http://dx.doi.org/10.1002/advs.201800026 Text en © 2018 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim 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
Guo, Zeqing
Nie, Huagui
Yang, Zhi
Hua, Wuxing
Ruan, Chunping
Chan, Dan
Ge, Mengzhan
Chen, Xi'an
Huang, Shaoming
3D CNTs/Graphene‐S‐Al(3)Ni(2) Cathodes for High‐Sulfur‐Loading and Long‐Life Lithium–Sulfur Batteries
title 3D CNTs/Graphene‐S‐Al(3)Ni(2) Cathodes for High‐Sulfur‐Loading and Long‐Life Lithium–Sulfur Batteries
title_full 3D CNTs/Graphene‐S‐Al(3)Ni(2) Cathodes for High‐Sulfur‐Loading and Long‐Life Lithium–Sulfur Batteries
title_fullStr 3D CNTs/Graphene‐S‐Al(3)Ni(2) Cathodes for High‐Sulfur‐Loading and Long‐Life Lithium–Sulfur Batteries
title_full_unstemmed 3D CNTs/Graphene‐S‐Al(3)Ni(2) Cathodes for High‐Sulfur‐Loading and Long‐Life Lithium–Sulfur Batteries
title_short 3D CNTs/Graphene‐S‐Al(3)Ni(2) Cathodes for High‐Sulfur‐Loading and Long‐Life Lithium–Sulfur Batteries
title_sort 3d cnts/graphene‐s‐al(3)ni(2) cathodes for high‐sulfur‐loading and long‐life lithium–sulfur batteries
topic Full Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6051211/
https://www.ncbi.nlm.nih.gov/pubmed/30027035
http://dx.doi.org/10.1002/advs.201800026
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