Functional separator with lower resistance toward lithium ion transport for enhancing the electrochemical performance of lithium ion batteries

Authors
Kim, Ki JaeKwon, Yong KabYim, TaeeunChoi, Wonchang
Issue Date
2019-03
Publisher
한국공업화학회
Citation
Journal of Industrial and Engineering Chemistry, v.71, pp.228 - 233
Abstract
By chemical treatment with benzoyl peroxide, oxygen-containing functional groups can be successfully introduced to the surface and interior of the PE separator, resulting in improved wettability and high electrolyte uptake without sacrificing mechanical and physicochemical properties. Hence, lithium ion transport across the PE separator treated by benzoyl peroxide is effectively facilitated by the formation of oxygen functional groups, leading to improved ionic conductivity. The LiB cells assembled with the PE separator treated by BPO exhibit remarkable rate capability and outstanding capacity retention (98.1%) after 70 cycles. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
Keywords
POLYETHYLENE SEPARATORS; COMPOSITE SEPARATORS; THERMAL-STABILITY; COATED SEPARATOR; MEMBRANE; Surface treatment; Hydrophilicity; Separator; Wettability; Lithium ion transfer; Lithium ion battery
ISSN
1226-086X
URI
https://pubs.kist.re.kr/handle/201004/120269
DOI
10.1016/j.jiec.2018.11.029
Appears in Collections:
KIST Article > 2019
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