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1. WO2020111457 - SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Publication Number WO/2020/111457
Publication Date 04.06.2020
International Application No. PCT/KR2019/010967
International Filing Date 28.08.2019
IPC
H01M 2/16 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
14Separators; Membranes; Diaphragms; Spacing elements
16characterised by the material
H01M 10/42 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/052 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
CPC
H01M 10/052
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
H01M 10/42
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 2/16
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details or processes of manufacture of the non-active parts
14Separators; Membranes; Diaphragms; Spacing elements
16characterised by the material
Applicants
  • 삼성에스디아이 주식회사 SAMSUNG SDI CO., LTD. [KR]/[KR]
Inventors
  • 이상호 LEE, Sangho
  • 배임혁 BAE, Imhyuck
  • 천지현 CHUN, Jihyun
  • 홍대현 HONG, Daehyun
Agents
  • 팬코리아특허법인 PANKOREA PATENT AND LAW FIRM
Priority Data
10-2018-015265230.11.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME
(FR) SÉPARATEUR POUR BATTERIE SECONDAIRE AU LITHIUM ET BATTERIE SECONDAIRE AU LITHIUM LE COMPRENANT
(KO) 리튬 이차 전지용 분리막 및 이를 포함하는 리튬 이차 전지
Abstract
(EN)
The present invention relates to a separator for a lithium secondary battery and a lithium secondary battery comprising the separator, the separator for a lithium secondary battery comprising: a polyolefin-based porous substrate; and a coating layer disposed on at least one side of the polyolefin-based porous substrate, wherein the coefficient of performance Q1 of the polyolefin-based porous substrate as represented by formula 1 is 1.2 (gf/nm·μm) or more, the coefficient of performance Q2 of the polyolefin-based porous substrate as represented by formula 2 is 0.25 (gf/nm·%) or more, and the coating layer comprises a binder and inorganic particles. A detailed description of formulas 1 and 2 are as described in the specification.
(FR)
La présente invention concerne un séparateur pour une batterie secondaire au lithium et une batterie secondaire au lithium comprenant le séparateur, le séparateur pour une batterie secondaire au lithium comprenant : un substrat poreux à base de polyoléfine ; et une couche de revêtement disposée sur au moins un côté du substrat poreux à base de polyoléfine, le coefficient de performance Q1 du substrat poreux à base de polyoléfine tel que représenté par la formule 1 étant supérieur ou égal à 1,2 (gf/nm·μm), le coefficient de performance Q2 Q2 du substrat poreux à base de polyoléfine tel que représenté par la formule 2 est supérieur ou égal à 0,25 (gf/nm·%), et la couche de revêtement comprend un liant et des particules inorganiques. Une description détaillée des formules 1 et 2 sont telles que décrites dans la spécification.
(KO)
폴리올레핀계 다공성 기재; 및 상기 폴리올레핀계 다공성 기재의 적어도 일면에 위치하는 코팅층을 포함하고, 상기 폴리올레핀계 다공성 기재의 식 1로 표시되는 성능계수 Q1은 1.2 (gf/㎚·㎛) 이상이고, 상기 폴리올레핀계 다공성 기재의 식 2로 표시되는 성능계수 Q2는 0.25 (gf/㎚·%) 이상이며, 상기 코팅층은 바인더 및 무기 입자를 포함하는, 리튬 이차 전지용 분리막 및 이를 포함하는 리튬 이차 전지에 관한 것이다. 상기 식 1 및 2의 상세 내용은 명세서에 설명한 바와 같다.
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