SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEBALE LITHIUM BATTERY INCLUDING SAME

Provided are a separator for lithium secondary batteries and a lithium secondary battery containing the same. The separator for lithium secondary batteries comprises: a porous substrate; and a coating layer located on at least one side of the porous substrate and having first polyethylene particles,...

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Bibliographic Details
Main Authors CHOI HYEONSEON, KIM JINYOUNG, SEO DONGWAN
Format Patent
LanguageEnglish
Korean
Published 24.10.2023
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:Provided are a separator for lithium secondary batteries and a lithium secondary battery containing the same. The separator for lithium secondary batteries comprises: a porous substrate; and a coating layer located on at least one side of the porous substrate and having first polyethylene particles, second polyethylene particles, and ceramic. The average size ratio of the second polyethylene particles to the average size of the first polyethylene particles is 25% to 80%. 리튬 이차 전지용 세퍼레이터 및 이를 포함하는 리튬 이차 전지를 제공하며, 상기 리튬 이차 전지용 세퍼레이터는 다공성 기재 및 상기 다공성 기재의 적어도 일면에 위치하고, 제1 폴리에틸렌 입자, 제2 폴리에틸렌 입자 및 세라믹을 포함하는 코팅층을 포함하고, 상기 제1 폴리에틸렌 입자의 평균 크기에 대한 제2 폴리에틸렌 입자의 평균 크기 비율은 25% 내지 80%이다.
Bibliography:Application Number: KR20220047169