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Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries

A free-standing nano-sulfur-based carbon nanotube/graphene (S/CNT/G) film with a conductive interlinked three-dimensional (3D) nanoarchitecture is fabricated via a facile solution-based method. This 3D multidimensional carbon–sulfur network combines three different nanoarchitectures, as follows: zer...

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Autores principales: Wei, Meng, Zhu, Huiqin, Zhai, Pengfei, An, Longkun, Geng, Hengyi, Xu, Song, Zhang, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9642362/
https://www.ncbi.nlm.nih.gov/pubmed/36381509
http://dx.doi.org/10.1039/d2na00494a
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author Wei, Meng
Zhu, Huiqin
Zhai, Pengfei
An, Longkun
Geng, Hengyi
Xu, Song
Zhang, Tao
author_facet Wei, Meng
Zhu, Huiqin
Zhai, Pengfei
An, Longkun
Geng, Hengyi
Xu, Song
Zhang, Tao
author_sort Wei, Meng
collection PubMed
description A free-standing nano-sulfur-based carbon nanotube/graphene (S/CNT/G) film with a conductive interlinked three-dimensional (3D) nanoarchitecture is fabricated via a facile solution-based method. This 3D multidimensional carbon–sulfur network combines three different nanoarchitectures, as follows: zero-dimensional sulfur nanoparticles, one-dimensional carbon nanotubes, and two-dimensional graphene. The CNTs with a one-dimensional structure act as a conductive matrix, and graphene with two-dimensional sheets is intercalated into the CNT scaffold to build a 3D structure, extending in an additional dimension to provide improved restriction for sulfur/polysulfides. Zero-dimensional sulfur nanoparticles are anchored uniformly on the interpenetrative 3D carbon framework to form a free-standing cathode. Moreover, this well-designed S/CNT/G film is flexible, highly conductive, binder free and current collector free. When directly used as a flexible cathode electrode, the synthesized S/CNT/G film delivers both excellent long-term cycling and high-rate performances. A high initial capacity of 948 mA h g(−1) is obtained, and subsequently, a reversible discharge capacity of 593 mA h g(−1) over 200 cycles is achieved at 0.5C. Even at a high rate of 3C, the S/CNT/G film with a 50 wt% sulfur content still exhibits a discharge capacity of 598 mA h g(−1). These results demonstrate the great potential of the S/CNT/G nanocomposite as a flexible and binder-free cathode for high performance Li–S batteries.
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spelling pubmed-96423622022-11-14 Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries Wei, Meng Zhu, Huiqin Zhai, Pengfei An, Longkun Geng, Hengyi Xu, Song Zhang, Tao Nanoscale Adv Chemistry A free-standing nano-sulfur-based carbon nanotube/graphene (S/CNT/G) film with a conductive interlinked three-dimensional (3D) nanoarchitecture is fabricated via a facile solution-based method. This 3D multidimensional carbon–sulfur network combines three different nanoarchitectures, as follows: zero-dimensional sulfur nanoparticles, one-dimensional carbon nanotubes, and two-dimensional graphene. The CNTs with a one-dimensional structure act as a conductive matrix, and graphene with two-dimensional sheets is intercalated into the CNT scaffold to build a 3D structure, extending in an additional dimension to provide improved restriction for sulfur/polysulfides. Zero-dimensional sulfur nanoparticles are anchored uniformly on the interpenetrative 3D carbon framework to form a free-standing cathode. Moreover, this well-designed S/CNT/G film is flexible, highly conductive, binder free and current collector free. When directly used as a flexible cathode electrode, the synthesized S/CNT/G film delivers both excellent long-term cycling and high-rate performances. A high initial capacity of 948 mA h g(−1) is obtained, and subsequently, a reversible discharge capacity of 593 mA h g(−1) over 200 cycles is achieved at 0.5C. Even at a high rate of 3C, the S/CNT/G film with a 50 wt% sulfur content still exhibits a discharge capacity of 598 mA h g(−1). These results demonstrate the great potential of the S/CNT/G nanocomposite as a flexible and binder-free cathode for high performance Li–S batteries. RSC 2022-09-27 /pmc/articles/PMC9642362/ /pubmed/36381509 http://dx.doi.org/10.1039/d2na00494a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wei, Meng
Zhu, Huiqin
Zhai, Pengfei
An, Longkun
Geng, Hengyi
Xu, Song
Zhang, Tao
Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries
title Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries
title_full Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries
title_fullStr Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries
title_full_unstemmed Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries
title_short Nano-sulfur confined in a 3D carbon nanotube/graphene network as a free-standing cathode for high-performance Li–S batteries
title_sort nano-sulfur confined in a 3d carbon nanotube/graphene network as a free-standing cathode for high-performance li–s batteries
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9642362/
https://www.ncbi.nlm.nih.gov/pubmed/36381509
http://dx.doi.org/10.1039/d2na00494a
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