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A Flame-Retardant Composite Polymer Electrolyte for Lithium-Ion Polymer Batteries

Title
A Flame-Retardant Composite Polymer Electrolyte for Lithium-Ion Polymer Batteries
Authors
Kim, SeokwooHan, TaeyeongJeong, JiseonLee, HoogilRyou, Myung-HyunLee, Yong Min
DGIST Authors
Lee, Yong Min
Issue Date
2017-07
Citation
Electrochimica Acta, 241, 553-559
Type
Article
Article Type
Article
Keywords
Accident PreventionCathode DensityChallengesComposite FilmsComposite Polymer ElectrolyteComposite Polymer ElectrolytesElectric BatteriesElectrochemical PerformanceElectrolytesFlame RetardantFlame Retardant PropertiesFlame RetardantsIonsLiCoO2Liquid ElectrolytesLithiumLithium Ion BatteriesLithium Ion Polymer BatteriesLithium Ion Polymer BatteryLithium AlloysMagnesium HydroxideMagnesium CastingsMagnesium HydroxideMagnesium HydroxidePoly(Vinylidene Co Hexafluoropropylene)PolyelectrolytesPolyethylene SeparatorsPolymer ElectrolytePolymer FilmsPolymersRate CapabilitiesSafetyThickness
ISSN
0013-4686
Abstract
A new composite polymer electrolyte (CPE) containing a flame-retardant material, Mg(OH)2, is fabricated via a two-step process: porous poly(vinylidene-co-hexafluoropropylene) films composited with different Mg(OH)2 contents are first prepared via casting and extraction steps, and they are then impregnated with a liquid electrolyte. As the Mg(OH)2 content in the CPEs increases, their flame-retardant properties are greatly improved compared to those of the bare polymer electrolyte. Moreover, the better wettability of Mg(OH)2 toward a liquid electrolyte leads to higher ionic conductivities of CPEs, thereby resulting in a better rate capability in LiCoO2/graphite lithium-ion polymer batteries (LiPBs). However, the Mg(OH)2 content must be limited to less than 40 wt% to maintain the mechanical properties of the corresponding CPEs. © 2017 Elsevier Ltd
URI
http://hdl.handle.net/20.500.11750/4722
DOI
10.1016/j.electacta.2017.04.129
Publisher
Elsevier Ltd
Related Researcher
Files:
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Collection:
Energy Science and EngineeringETC1. Journal Articles


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