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Poly(vinylpyridine-co-styrene) based in situ cross-linked gel polymer electrolyte for lithium-ion polymer batteries
- Source :
-
Electrochimica Acta . Dec2011, Vol. 57, p46-51. 6p. - Publication Year :
- 2011
-
Abstract
- Abstract: A gel polymer electrolyte (GPE) was successfully prepared by means of an in situ cross-linking reaction of poly(2-vinylpyridine-co-styrene) and oligo(ethylene oxide) with epoxide functional groups at 65°C without using a polymerization initiator. A stable gel polymer electrolyte could be obtained by adding only 1% of a polymer gelator. The ionic conductivity of the GPE containing 99wt% of liquid electrolyte was measured to be ca. 10−2 S/cm at the ambient temperature. The ionic conductivity of the resulting GPE was comparable to that of a pure liquid electrolyte. The electrochemical stability window of the prepared gel polymer electrolytes was measured to be 5.2V. The test cell carried a discharge capacity of 133.2mAh/g at 0.1C and showed good cycling performance with negligible capacity fading after the 200th cycle, maintaining 99.5% coulombic efficiency throughout 200 cycles. The resulting gel polymer electrolyte prepared by in situ thermal cross-linking without a polymerization initiator holds promise for application to on the high power lithium-ion polymer batteries. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00134686
- Volume :
- 57
- Database :
- Academic Search Index
- Journal :
- Electrochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 67701287
- Full Text :
- https://doi.org/10.1016/j.electacta.2011.05.029