GEL POLYMER ELECTROLYTE COMPOSITION

WIPO Patent Application WO/2011/087029

A1

Disclosed is a gel polymer electrolyte composition that has excellent electrolyte retention characteristics, ion conductivity, mechanical strength, and shape retention characteristics. Said composition does not require an extra step for cross-linking and can provide a secondary battery with excellent cycle characteristics. Also provided is a vinyl acetal polymer used in the aforementioned gel polymer electrolyte composition. Said vinyl acetal polymer contains a cationic functional group. The gel polymer electrolyte composition contains the provided vinyl acetal polymer and an electrolyte solution. The weight ratio between the vinyl acetal polymer and the electrolyte solution in the gel polymer electrolyte composition is between 0.5:99.5 and 9:91.

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FUJIOKA, Junji (2045-1,Sakazu,Kurashiki-sh, Okayama 01, 〒7100801, JP)
藤岡　準治 (〒01 岡山県倉敷市酒津２０４５番地の１　株式会社クラレ内 Okayama, 〒7100801, JP)

JP2011/050383

July 21, 2011

January 13, 2011

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KURARAY CO.,LTD. (1621, SakazuKurashiki-sh, Okayama 01, 〒7100801, JP)
株式会社クラレ (〒01 岡山県倉敷市酒津１６２１番地 Okayama, 〒7100801, JP)
FUJIOKA, Junji (2045-1,Sakazu,Kurashiki-sh, Okayama 01, 〒7100801, JP)

C08F16/38; H01B1/06; H01B13/00; H01M10/0565

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