发明名称 |
MICROPOROUS MEMBRANE |
摘要 |
A porous polymer membrane is made by dissolving a polymer consisting primarily of vinylidene fluoride in a suitable liquid, casting the polymer solution to form a thin layer on a substrate, and then slowly evaporating the liquid phase (without contacting the layer with any other liquids) so that a substantially uniform microporous membrane of polymer is formed. The liquid may comprise a solvent for the polymer, combined with a small proportion of a non-solvent which dissolves in the solvent. Alternatively the liquid may be a latent solvent. The evaporation process may be performed at a temperature above ambient temperature, and involves exposing the film to dry gas. The microporous membrane or film may be used to form a solid electrolyte for a lithium cell, by soaking it in a non-aqueous liquid electrolyte, the film combining with the electrolyte solution to form a solid electrolyte or a gelled electrolyte. |
申请公布号 |
WO0148063(A1) |
申请公布日期 |
2001.07.05 |
申请号 |
WO2000GB04889 |
申请日期 |
2000.12.20 |
申请人 |
AEA TECHNOLOGY PLC;COOWAR, FAZLIL;KRONFLI, ESAM |
发明人 |
COOWAR, FAZLIL;KRONFLI, ESAM |
分类号 |
C08J9/28;C08J5/22;H01M2/16;H01M10/0525;H01M10/0565;H01M10/36 |
主分类号 |
C08J9/28 |
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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