Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 753-757 |
| Number of pages | 5 |
| Journal | Journal of Solid State Electrochemistry |
| Volume | 15 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2011 |
Bibliographical note
Funding Information:This work was supported by the IT R&D program of MKE/IITA (Core Lithium Secondary Battery Anode Materials for Next Generation Mobile Power Module, 2008-F-019-01)
Keywords
- Anion receptor
- Coated separator
- Gel polymer electrolyte
- Lithium-ion polymer battery
- PEG-borate ester