POROUS COMPOSITE SEPARATOR FOR SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
The present invention relates to: a porous composite separator for a secondary battery comprising a porous substrate, and a coating layer formed on the porous substrate, wherein the coating layer has a plurality of inorganic particles, which are connected and fixed by a composite binder comprising a...
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| Format: | Patent |
| Sprache: | eng ; fre ; kor |
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| Zusammenfassung: | The present invention relates to: a porous composite separator for a secondary battery comprising a porous substrate, and a coating layer formed on the porous substrate, wherein the coating layer has a plurality of inorganic particles, which are connected and fixed by a composite binder comprising a particulate polymer binder and an interpenetrating polymer network (IPN)-type binder having no melting point and having a thermal decomposition temperature of 300°C or higher; and a lithium secondary battery comprising the same.
La présente invention concerne : un séparateur composite poreux pour une batterie secondaire comprenant un substrat poreux, et une couche de revêtement formée sur le substrat poreux, la couche de revêtement ayant une pluralité de particules inorganiques, qui sont reliés et fixés par un liant composite comprenant un liant polymère particulaire et un liant de type à réseau interpénétré de polymères (alliage IPN) n'ayant pas de point de fusion et ayant une température de décomposition thermique supérieure ou égale à 300 °C ; et une batterie secondaire au lithium le comprenant.
본 발명은 다공성 기재 및 상기 다공성 기재 상에 형성된 코팅층을 포함하는 분리막으로서, 상기 코팅층은 복수의 무기입자가 입자형 고분자 바인더와 용융점 없이 열분해온도가 300℃ 이상인 상호침입고분자네트워크(IPN)형 바인더를 포함하는 복합바인더에 의해 연결되고 고정된 것인 이차전지용 다공성 복합분리막 및 이를 포함하는 리튬이차전지에 관한 것이다. |
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