Manufacturing N,O-carboxymethyl chitosan-reduced graphene oxide under freeze-dying for performance improvement of Li-S battery

Zhibin Jiang; Lujie Jin; Xiying Jian; Jinxia Huang; Hongshuai Wang; Binhong Wu; Kang Wang; Ling Chen; Youyong Li; Xiang Liu; Weishan Li

doi:10.1088/2631-7990/aca44c

PDF
Cite
Share

facebook

twitter

google

linkedin

Wechat

Wechat

Volume 5 Issue 1

Jan. 2023

Article Contents

Article Navigation > International Journal of Extreme Manufacturing > 2023 > 5(1): 015502

Jiang Z B et al. 2023. Manufacturing N,O-carboxymethyl chitosan-reduced graphene oxide under freeze-dying for performance improvement of Li-S battery. Int. J. Extrem. Manuf. 5 015502.

Citation:

Jiang Z B et al. 2023. Manufacturing N,O-carboxymethyl chitosan-reduced graphene oxide under freeze-dying for performance improvement of Li-S battery. Int. J. Extrem. Manuf. 5 015502.

Manufacturing N,O-carboxymethyl chitosan-reduced graphene oxide under freeze-dying for performance improvement of Li-S battery

doi: 10.1088/2631-7990/aca44c

More Information

1 School of Chemistry, Engineering Research Center of MTEES (Ministry of Education), Research Center of BMET (Guangdong Province), Engineering Laboratory of OFMHEB (Guangdong Province), Key Laboratory of ETESPG (GHEI), and Innovative Platform for ITBMD (Guangzhou Municipality), South China Normal University, Guangzhou, People’s Republic of China;
2 Shenzhen School Affiliated to Sun Yat-Sen University, Shenzhen, People’s Republic of China;
3 Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, People’s Republic of China;
4 Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Macau SAR, People’s Republic of China;
5 College of Energy Science and Engineering, Nanjing Tech University, Nanjing, People’s Republic of China

Publish Date: 2023-01-30

Abstract

Lithium-sulfur (Li-S) batteries can provide far higher energy density than currently commercialized lithium ion batteries, but challenges remain before it they are used in practice. One of the challenges is the shuttle effect that originates from soluble intermediates, like lithium polysulfides. To address this issue, we report a novel laminar composite, N,O-carboxymethyl chitosan-reduced graphene oxide (CC-rGO), which is manufactured via the self-assembly of CC onto GO and subsequent reduction of GO under an extreme condition of 1 Pa and -50 ℃. The synthesized laminar CC-rGO composite is mixed with acetylene black (AB) and coated on a commercial polypropylene (PP) membrane, resulting in a separator (CC-rGO/AB/PP) that can not only completely suppress the polysulfides penetration, but also can accelerate the lithium ion transportation, providing a Li-S battery with excellent cyclic stability and rate capability. As confirmed by theoretic simulations, this unique feature of CC-rGO is attributed to its strong repulsive interaction to polysulfide anions and its benefit for fast lithium ion transportation through the paths paved by the heteroatoms in CC.
Keywords

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Figures(1)

Get Citation

PDF

XML

Article Metrics

Article views(197) PDF Downloads(16) Citation(0)

Manufacturing N,O-carboxymethyl chitosan-reduced graphene oxide under freeze-dying for performance improvement of Li-S battery

doi: 10.1088/2631-7990/aca44c

1 School of Chemistry, Engineering Research Center of MTEES (Ministry of Education), Research Center of BMET (Guangdong Province), Engineering Laboratory of OFMHEB (Guangdong Province), Key Laboratory of ETESPG (GHEI), and Innovative Platform for ITBMD (Guangzhou Municipality), South China Normal University, Guangzhou, People’s Republic of China;

2 Shenzhen School Affiliated to Sun Yat-Sen University, Shenzhen, People’s Republic of China;

3 Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, People’s Republic of China;

4 Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Macau SAR, People’s Republic of China;

5 College of Energy Science and Engineering, Nanjing Tech University, Nanjing, People’s Republic of China

Publish Date: 2023-01-30

Key words:

Abstract:

Lithium-sulfur (Li-S) batteries can provide far higher energy density than currently commercialized lithium ion batteries, but challenges remain before it they are used in practice. One of the challenges is the shuttle effect that originates from soluble intermediates, like lithium polysulfides. To address this issue, we report a novel laminar composite, N,O-carboxymethyl chitosan-reduced graphene oxide (CC-rGO), which is manufactured via the self-assembly of CC onto GO and subsequent reduction of GO under an extreme condition of 1 Pa and -50 ℃. The synthesized laminar CC-rGO composite is mixed with acetylene black (AB) and coated on a commercial polypropylene (PP) membrane, resulting in a separator (CC-rGO/AB/PP) that can not only completely suppress the polysulfides penetration, but also can accelerate the lithium ion transportation, providing a Li-S battery with excellent cyclic stability and rate capability. As confirmed by theoretic simulations, this unique feature of CC-rGO is attributed to its strong repulsive interaction to polysulfide anions and its benefit for fast lithium ion transportation through the paths paved by the heteroatoms in CC.