发明名称 |
POLYMERIC ELECTROLYTIC CELL SEPARATOR MEMBRANE AND METHOD OF MAKING SAME |
摘要 |
A flexible polymeric film useful as an interelectrode separator or electrolyte member in electrolytic devices, such as rechargeable batteries, comprises a copolymer of vinylidene fluoride with 8 to 25% hexafluoropropylene. The film may be cast or formed as a self-supporting layer retaining about 20% to 70% of a high-boiling solvent or solvent mixture comprising such solvents as ethylene carbonate, propylene carbonate, dimethyl carbonate, and dibutyl phthalate. The film may be used in such form or after leaching of the retained solvent with a film-inert low-boiling solvent to provide a separator member into which a solution of electrolytic salt is subsequently imbibed to displace retained solvent or replace solvent previously leached from the polymeric matrix. |
申请公布号 |
EP0714561(A4) |
申请公布日期 |
2002.03.13 |
申请号 |
EP19940924122 |
申请日期 |
1994.08.02 |
申请人 |
TELCORDIA TECHNOLOGIES, INC. |
发明人 |
GOZDZ, ANTONI STANISLAW;SCHMUTZ, CAROLINE NICHOLE;TARASCON, JEAN-MARIE;WARREN, PAUL CLIFFORD |
分类号 |
C08J9/26;C08J9/28;H01M2/16;H01M6/18;H01M6/32;H01M10/05;H01M10/052;H01M10/0565 |
主分类号 |
C08J9/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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