Titles:
POLYOLEFIN MICROPOROUS MEMBRANE AND BATTERY
ポリオレフィン微多孔膜、電池
Abstracts:
Provided is a polyolefin microporous membrane that contains a polyolefin as a main component, in which the 10 μm equivalent air permeation resistance is 50-400 seconds/100 cc, and in which the rate of change in the membrane thickness at the time of shutdown is 33% or less. The polyolefin microporous membrane has excellent permeability and shutdown characteristics when incorporated into a battery as a separator.
Titles:
Separator for lithium ion secondary battery
リチウムイオン二次電池用セパレータ
Abstracts:
PROBLEM TO BE SOLVED: To provide a high-strength separator or the like applicable to a power storage device represented by a lithium ion secondary battery (LIB). SOLUTION: A separator containing a microporous layer containing a polyolefin resin as a main component and a functional layer on the microporous layer, wherein the functional layer contains water-insoluble organic fibers, and the average long pore size of the microporous layer. Is 1 μm or less. [Selection diagram] None
Titles:
SEPARATOR FOR LITHIUM SECONDADRY BATTERY AND MANUFACTURING METHOD THEREOF
리튬이차전지용 세퍼레이터 및 이의 제조방법
Abstracts:
Porous polymer substrate; And a porous coating layer formed on at least one surface of the porous polymer substrate, wherein the porous coating layer includes inorganic particles, a binder polymer, and a dispersant, and the binder polymer includes a fluorine-based binder polymer and a polyimide-based binder polymer, the The polyimide-based binder polymer is in the form of particles, the weight (A) of the polyimide-based binder polymer and the weight (B) of the fluorine-based binder polymer satisfy A/B ≤ 1, and the content of the dispersant is 100 in the porous coating layer. It provides a separator for a lithium secondary battery and a method for manufacturing the same, which is 2.125 to 3.0 parts by weight based on parts by weight. Accordingly, it is possible to provide a separator having lami strength equal to or similar to that of the prior art and improved heat resistance.
다공성 고분자 기재; 및 상기 다공성 고분자 기재의 적어도 일면에 형성된 다공성 코팅층;을 포함하며, 상기 다공성 코팅층은 무기물 입자, 바인더 고분자, 분산제를 포함하고, 상기 바인더 고분자는 불소계 바인더 고분자 및 폴리이미드계 바인더 고분자를 포함하고, 상기 폴리이미드계 바인더 고분자는 입자 형태이며, 상기 폴리이미드계 바인더 고분자의 중량(A)과 상기 불소계 바인더 고분자의 중량(B)이 A/B ≤ 1 을 만족하며, 상기 분산제의 함량이 상기 다공성 코팅층 100 중량부를 기준으로 2.125 내지 3.0 중량부인 것인, 리튬이차전지용 세퍼레이터 및 이의 제조방법을 제공한다. 이에 따라 종래와 동등 또는 유사한 Lami Strength를 가지며 동시에 내열성이 향상된 세퍼레이터를 제공할 수 있다.
Applicant:
LG CHEMICAL LTD [KR] (주식회사 엘지화학)
Inventors:
YOON SU JIN (윤수진)
KIM MYEONG SOO (김명수)
KWON HYE JIN (권혜진)
LEE JE AN (이제안)
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