Anion receptor-coated separator for lithium-ion polymer battery

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 th...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2011-04, Vol.15 (4), p.753-757
Main Authors: Lee, Je An, Lee, Jun Young, Ryou, Myung Hyun, Han, Gi-Beom, Lee, Je-Nam, Lee, Dong-Jin, Park, Jung-Ki, Lee, Yong Min
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Electrochemistry
Energy Storage
Original Paper
Physical Chemistry
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Summary: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 × 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.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-010-1149-y