Anion receptor-coated separator for lithium-ion polymer battery

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Anion receptor-coated separators were prepared by coating poly(ethylene glycol) borate ester (PEGB) as an anion receptor and poly(vinyl acetate) (PVAc) as a good adhesive material towards electrodes onto microporous polyethylene (PE) separators. Gel polymer electrolytes were fabricated by soaking them in an liquid electrolyte, 1 M LiPF(6) in EC/DEC/PC (30/65/5, wt.%). As the weight ratio of PEGB to PVAc in a coating layer increased, gel polymer electrolytes showed higher cationic conductivity and electrochemical stability. The cationic conductivity and electrochemical stability of the gel polymer electrolyte based on coated separator with PVAc/PEGB (2/5, weight ratio) could reach 2.8 x 10(-4) S cm(-1) and 4.8 V, respectively. Lithium-ion polymer cells (LiCoO(2)/graphite) based on gel polymer electrolytes with and without PEGB were assembled, and their electrochemical performances were evaluated.
Publisher
SPRINGER
Issue Date
2011-04
Language
English
Article Type
Article
Keywords

BORATE ESTER; TRIS(PENTAFLUOROPHENYL) BORANE; SECONDARY BATTERY; ELECTROLYTES; CONDUCTIVITY; IMPROVE; LAYER

Citation

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, v.15, no.4, pp.753 - 757

ISSN
1432-8488
DOI
10.1007/s10008-010-1149-y
URI
http://hdl.handle.net/10203/100656
Appears in Collection
CBE-Journal Papers(저널논문)
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