Fabrication of vulcanized cross-linked polystyrene grafted on carbon nanotubes for use as an advanced lithium host

KE Xian-lan; LU Yu-heng; WU Jin-lun; WU Ding-cai

doi:10.1016/S1872-5805(23)60745-0

Volume 38 Issue 4

Aug. 2023

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Article Navigation > New Carbon Mater. > 2023 > 38(4): 743-753

KE Xian-lan, LU Yu-heng, WU Jin-lun, WU Ding-cai. Fabrication of vulcanized cross-linked polystyrene grafted on carbon nanotubes for use as an advanced lithium host. New Carbon Mater., 2023, 38(4): 743-753. doi: 10.1016/S1872-5805(23)60745-0

Citation:

KE Xian-lan, LU Yu-heng, WU Jin-lun, WU Ding-cai. Fabrication of vulcanized cross-linked polystyrene grafted on carbon nanotubes for use as an advanced lithium host. New Carbon Mater., 2023, 38(4): 743-753. doi: 10.1016/S1872-5805(23)60745-0

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Fabrication of vulcanized cross-linked polystyrene grafted on carbon nanotubes for use as an advanced lithium host

doi: 10.1016/S1872-5805(23)60745-0

KE Xian-lan^1
,,
LU Yu-heng¹,
WU Jin-lun^{2
,
,},
WU Ding-cai^{1
,
,}

1.
PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
2.
Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China

More Information

Author Bio:
柯贤澜，硕士生. E-mail：kexlan@mail2.sysu.edu.cn
Corresponding author: WU Jin-lun, Ph.D. E-mail: wujinlun@gdph.org.cn; WU Ding-cai, Ph.D, Professor. E-mail: wudc@mail.sysu.edu.cn
Received Date: 2023-03-22
Accepted Date: 2023-05-29
Rev Recd Date: 2023-05-29

Available Online: 2023-06-01

Publish Date: 2023-08-01

Abstract

Abstract

We report the fabrication of vulcanized cross-linked polystyrene grafted on carbon nanotubes (CNTs) for use as an advanced three-dimensional Li host. First, polystyrene was grafted from Br-modified CNTs to form brush-like structure by surface-initiated atom-transfer radical polymerization. Polystyrene grafted on carbon nanotubes was then cross-linked using a Friedel-Crafts reaction and finally vulcanized with sulfur. Vulcanized cross-linked polystyrene grafted on carbon nanotubes was used as a support for the Li metal, and its macro-, meso- and microporous structure increased Li ion transport, buffered the volume changes of the Li anode, and provided a high specific surface area to reduce local current density, which assisted rapid and uniform Li plating/stripping. At the same time, the homogenously distributed sulfur in the support reacted with Li to produce a Li₂S-containing SEI layer, while the CNTs provided conductive pathways for the rapid transmission of electrons. As a result, a Li|Li symmetric cell using this anode material and a Cu current collector had a stable cycling performance of more than 500 h at a current density of 1 mA cm⁻². When LiFePO₄ was used as the cathode, a full cell had a high discharge capacity of 101 mAh g⁻¹ with a capacity retention of 77% after 600 cycles at 1 C.
- Vulcanized hypercrosslinked polystyrene brushes,
- Carbon nanotube substrates,
- Advanced lithium hosts,
- Li₂S-containing SEI,
- Lithium metal batteries

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References(31)

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