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Open AccessArticle

A Novel Electrospinning Polyacrylonitrile Separator with Dip-Coating of Zeolite and Phenoxy Resin for Li-ion Batteries

1
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
2
Department of Mechanical Engineering, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
*
Authors to whom correspondence should be addressed.
Academic Editor: Michael O. Daramola
Membranes 2021, 11(4), 267; https://doi.org/10.3390/membranes11040267
Received: 9 March 2021 / Revised: 31 March 2021 / Accepted: 4 April 2021 / Published: 8 April 2021
(This article belongs to the Special Issue Composite Membranes: Preparation and Applications)
Commercial separators (polyolefin separators) for lithium-ion batteries still have defects such as low thermostability and inferior interface compatibility, which result in serious potential safety distress and poor electrochemical performance. Zeolite/Polyacrylonitrile (Z/PAN) composite separators have been fabricated by electrospinning a polyacrylonitrile (PAN) membrane and then dip-coating it with zeolite (ZSM-5). Different from commercial separators, the Z/PAN composite separators exhibit high electrolyte uptake, excellent ionic conductivity, and prominent thermal stability. Specifically, the Z/PAN-1.5 separator exhibits the best performance, with a high electrolyte uptake of 308.1% and an excellent ionic conductivity of 2.158 mS·cm−1. The Z/PAN-1.5 separator may mechanically shrink less than 10% when held at 180 °C for 30 min, proving good thermal stability. Compared with the pristine PAN separator, the Li/separator/LiFePO4 cells with the Z/PAN-1.5 composite separator have excellent high-rate discharge capacity (102.2 mAh·g−1 at 7 C) and favorable cycling performance (144.9 mAh·g−1 at 0.5 C after 100 cycles). Obviously, the Z/PAN-1.5 separator holds great promise in furthering the safety and performance of lithium-ion batteries. View Full-Text
Keywords: separator; electrospinning; polyacrylonitrile; zeolite; lithium-ion batteries separator; electrospinning; polyacrylonitrile; zeolite; lithium-ion batteries
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MDPI and ACS Style

Chen, D.; Wang, X.; Liang, J.; Zhang, Z.; Chen, W. A Novel Electrospinning Polyacrylonitrile Separator with Dip-Coating of Zeolite and Phenoxy Resin for Li-ion Batteries. Membranes 2021, 11, 267. https://doi.org/10.3390/membranes11040267

AMA Style

Chen D, Wang X, Liang J, Zhang Z, Chen W. A Novel Electrospinning Polyacrylonitrile Separator with Dip-Coating of Zeolite and Phenoxy Resin for Li-ion Batteries. Membranes. 2021; 11(4):267. https://doi.org/10.3390/membranes11040267

Chicago/Turabian Style

Chen, Danxia; Wang, Xiang; Liang, Jianyu; Zhang, Ze; Chen, Weiping. 2021. "A Novel Electrospinning Polyacrylonitrile Separator with Dip-Coating of Zeolite and Phenoxy Resin for Li-ion Batteries" Membranes 11, no. 4: 267. https://doi.org/10.3390/membranes11040267

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