发明名称 |
LITHIUM BATTERY SEPARATOR WITH SHUTDOWN FUNCTION |
摘要 |
This invention relates to separators for batteries and other electrochemical cells, especially lithium-ion batteries, having a shutdown mechanism. The separator is a laminate that contains a nonwoven nanoweb and a porous layer composed of a plurality of thermoplastic particles having particle size smaller than the mean flow pore size of the nanoweb. The shutdown layer melts and starts to flow at a desired temperature, and restricts the ion flow path, resulting in a substantial decrease in ionic conductivity of the separator at the desired shutdown temperature, while leaving the separator intact. |
申请公布号 |
WO2012100064(A1) |
申请公布日期 |
2012.07.26 |
申请号 |
WO2012US21883 |
申请日期 |
2012.01.19 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY;MAZUR, STEPHEN;FRISK, SIMON;LEVIT, NATALIA V. |
发明人 |
MAZUR, STEPHEN;FRISK, SIMON;LEVIT, NATALIA V. |
分类号 |
H01M2/16;H01M10/0525;H01M10/42 |
主分类号 |
H01M2/16 |
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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