Issue 46, 2020, Issue in Progress
From the journal:

RSC Advances

High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery

Xiang Li,ad   Shilin Chen,a   Zilong Xia,b   Li Li ORCID logo *c  and  Wenhui Yuan ORCID logo *a  

* Corresponding authors

a School of Chemistry and Chemical Engineering, South China University of Technology, Wushan, Tianhe, Guangzhou 510640, P. R. China
E-mail: cewhyuan@scut.edu.cn
Fax: +86 20 8711 1887
Tel: +86 20 8711 1887

b Xiangyang Cigarette Factory, China Tobacco Hubei Industrial Co., Ltd, China

c College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, P. R. China

d SCUT-Zhuhai Institute of Modern Industrial Innovation, China

Abstract

In this study, a novel boehmite/polyacrylonitrile (BM/PAN) composite nanofiber membrane was prepared using the electrospinning technique. The physical and electrochemical properties of different contents of BM/PAN composite nanofiber membranes were investigated as separators for lithium ion batteries (LIBs). Compared to the commercial polypropylene (PP) separator, the experimental results show that the BM/PAN composite nanofiber separator possesses a unique three-dimensional (3D) interconnected structure and exhibits higher porosity, greater electrolyte up-take, higher thermal stability and better electrochemical performance in a LiCoO2/Li cell. Besides, batteries containing 30 wt% BM/PAN membranes display the highest ionic conductivity (2.85 mS cm−1), widest electrochemical stability window (5.5 V vs. Li+/Li), leading to the highest initial discharge capacity (162 mA h g−1) and the largest capacity retention ratio (90.7%) at 0.5C after 100 cycles. These findings reveal that the BM/PAN composite nanofiber membranes are promising candidates as commercial separators for high performance LIBs.

Graphical abstract: High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery

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Article information

DOI
https://doi.org/10.1039/D0RA02401E
Article type
Paper
Submitted
15 Mar 2020
Accepted
10 Jul 2020
First published
22 Jul 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 27492-27501

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High performance of boehmite/polyacrylonitrile composite nanofiber membrane for polymer lithium-ion battery

X. Li, S. Chen, Z. Xia, L. Li and W. Yuan, RSC Adv., 2020, 10, 27492 DOI: 10.1039/D0RA02401E

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