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A crosslinked nonwoven separator based on an organosoluble polyimide for high-performance lithium-ion batteries

Title
A crosslinked nonwoven separator based on an organosoluble polyimide for high-performance lithium-ion batteries
Authors
Byun, SeoungwooLee, Seung HyunSong, DanohRyou, Myung-HyunLee, Yong MinPark, Won Ho
DGIST Authors
Lee, Yong Min
Issue Date
2019-04
Citation
Journal of Industrial and Engineering Chemistry, 72, 390-399
Type
Article
Article Type
Article
Author Keyword
Electrochemical performance; Lithium-ion battery; Organosoluble polyimide; Separator; Thermal stability
Keyword
Electrolytes; Heat resistance; Ions; Nanofibers; Polyimides; Separators; Thermodynamic stability; Advanced lithium-ion batteries; Electrochemical performance; High-performance lithium-ion batteries; Liquid electrolytes; Nanofibrous membranes; Organosoluble polyimides; Thermal and mechanical stabilities; Thermal crosslinking; Lithium-ion batteries
ISSN
1226-086X
Abstract
Thermostable polymers offer excellent thermal and mechanical stabilities, and in this study, an organosoluble polyimide (PI) was employed to fabricate high-performance separators for use in advanced lithium-ion batteries (LIBs). The organosoluble PI was synthesized and its nanofibrous membrane was fabricated via electrospinning. A subsequent heat treatment induced thermal crosslinking between the PI nanofibers to improve the heat resistance of the separators. PI nanofibrous membrane exhibited excellent wettability toward the liquid electrolyte, resulting in a greatly improved rate capability and cycle life. These results suggest that organosoluble PI nanofibrous membranes have a high potential for use as separators in high-performance LIBs. © 2018 The Korean Society of Industrial and Engineering Chemistry
URI
http://hdl.handle.net/20.500.11750/9672
DOI
10.1016/j.jiec.2018.12.041
Publisher
Korean Society of Industrial Engineering Chemistry
Related Researcher
Files:
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Collection:
Department of Energy Science and EngineeringBattery Materials & Systems LAB1. Journal Articles


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