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1. WO2020138620 - SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Publication Number WO/2020/138620
Publication Date 02.07.2020
International Application No. PCT/KR2019/009136
International Filing Date 24.07.2019
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 10/052 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 50/409
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40Separators; Membranes; Diaphragms; Spacing elements inside cells
409Separators, membranes or diaphragms characterised by the material
H01M 50/411
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40Separators; Membranes; Diaphragms; Spacing elements inside cells
409Separators, membranes or diaphragms characterised by the material
411Organic material
H01M 50/446
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40Separators; Membranes; Diaphragms; Spacing elements inside cells
409Separators, membranes or diaphragms characterised by the material
446Composite material consisting of a mixture of organic and inorganic materials
H01M 50/449
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40Separators; Membranes; Diaphragms; Spacing elements inside cells
409Separators, membranes or diaphragms characterised by the material
449having a layered structure
H01M 50/461
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40Separators; Membranes; Diaphragms; Spacing elements inside cells
46Separators, membranes or diaphragms characterised by their combination with electrodes
461with adhesive layers between electrodes and separators
Applicants
  • 삼성에스디아이 주식회사 SAMSUNG SDI CO., LTD. [KR]/[KR]
Inventors
  • 서동완 SEO, Dongwan
  • 김가인 KIM, Gain
  • 김양섭 KIM, Yangseob
  • 김용경 KIM, Yongkyoung
  • 이정윤 LEE, Jungyoon
  • 최연주 CHOI, Yeonjoo
  • 최현선 CHOI, Hyeonsun
Agents
  • 팬코리아특허법인 PANKOREA PATENT AND LAW FIRM
Priority Data
10-2018-016918226.12.2018KR
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 same, the separator comprising: a porous substrate; and a coating layer positioned on at least one surface of the porous substrate. The coating layer comprises an acrylic copolymer comprising a first structural unit which is derived from (meth)acrylamide, a second structural unit which is derived from (meth)acrylonitrile, and a third structural unit which is derived from (meth)acrylamido sulfonic acid, (meth)acrylamido sulfonate or a combination thereof. The first structural unit is comprised in 55 mol% to 90 mol% on the basis of 100 mol% of the (meth)acrylic copolymer. The second structural unit and third structural unit are each independently comprised in 5 mol% to 40 mol% on the basis of 100 mol% of the (meth)acrylic copolymer. The weight average molecular weight of the (meth)acrylic copolymer is 200,000 to 700,000.
(FR)
La présente invention concerne un séparateur pour une batterie secondaire au lithium et une batterie secondaire au lithium le comprenant, le séparateur comprenant : un substrat poreux ; et une couche de revêtement positionnée sur au moins une surface du substrat poreux. La couche de revêtement comprend un copolymère acrylique comprenant une première unité structurale qui est dérivée de (méth)acrylamide, une deuxième unité structurale qui est dérivée de (méth)acrylonitrile, et une troisième unité structurale qui est dérivée d'acide (méth)acrylamido-sulfonique, de (méth)acrylamido-sulfonate ou d'une combinaison de ceux-ci. La première unité structurale représente de 55 % en moles à 90 % en moles sur la base de 100 % en moles du copolymère de (méth)acrylique. La deuxième unité structurale et la troisième unité structurale représentent chacune indépendamment de 5 % en moles à 40 % en moles sur la base de 100 % en moles du copolymère (méth)acrylique. Le poids moléculaire moyen en poids du copolymère (méth)acrylique est de 200 000 à 700 000.
(KO)
다공성 기재; 및 상기 다공성 기재의 적어도 일면에 위치하는 코팅층을 포함하고, 상기 코팅층은 (메타)아크릴아마이드로부터 유도되는 제1 구조단위, (메타)아크릴로니트릴로부터 유도되는 제2 구조단위, 및 (메타)아크릴아미도술폰산, (메타)아크릴아미도술폰산 염 또는 이들의 조합으로부터 유도되는 제3 구조단위를 포함하는 아크릴계 공중합체를 포함하고, 상기 제1 구조단위는 상기 (메타)아크릴계 공중합체 100 몰%에 대하여 55 몰% 내지 90 몰%로 포함되며, 상기 제2 구조단위 및 제3 구조단위는 각각 독립적으로 상기 (메타)아크릴계 공중합체 100 몰%에 대하여 5 몰% 내지 40몰%로 포함되고, 상기 (메타)아크릴계 공중합체는 200,000 내지 700,000의 중량 평균 분자량을 가지는, 리튬 이차 전지용 분리막 및 이를 포함하는 리튬 이차 전지에 관한 것이다.
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