Titles:
CROSSLINKED STRUCTURE-CONTAINING SEPARATOR FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY INCLUDING SEPARATOR
리튬 이차전지용 가교구조 함유 분리막, 이의 제조 방법, 및 상기 분리막을 구비한 리튬 이차전지
Abstracts:
The present invention relates to a crosslinked structure-containing separator for a lithium secondary battery, a preparation method therefor, and a lithium secondary battery including the separator, the separator comprising: a crosslinked structure-containing porous olefin polymer support having a crosslinked structure in which polymer chains are directly linked; an inorganic hybrid pore layer positioned on at least one surface of the crosslinked structure-containing porous olefin polymer support and containing an inorganic filler and a first binder polymer; and a porous adhesive layer positioned on the inorganic hybrid pore layer and containing a second binder polymer. The crosslinked structure-containing separator for a lithium secondary battery according to the present invention has improved high-temperature stability and excellent adhesive strength to electrodes. The preparation method for the crosslinked structure-containing separator for a lithium secondary battery according to the present invention can simplify a process since no equipment for photo-crosslinking the porous olefin polymer support is additionally required due to the addition of a photo-initiator to a coating liquid for forming a porous adhesive layer.
본 발명은 고분자 사슬 사이가 직접적으로 연결된 가교구조를 가지는 가교구조 함유 올레핀고분자 다공지지체; 상기 가교구조 함유 올레핀고분자 다공지지체의 적어도 일면에 위치하고, 무기 필러 및 제1 바인더 고분자를 포함하는 무기물 혼성 공극층; 및 상기 무기물 혼성 공극층 상에 위치하고, 제2 바인더 고분자를 포함하는 다공성 접착층;을 포함하는 리튬 이차전지용 가교구조 함유 분리막, 이의 제조 방법 및 상기 분리막을 구비한 리튬 이차전지에 관한 것이다. 본 발명에 따른 리튬 이차전지용 가교구조 함유 분리막은 고온 안전성이 개선되고 전극과의 접착력이 우수하다. 본 발명에 따른 리튬 이차전지용 가교구조 함유 분리막의 제조 방법은 다공성 접착층 형성용 코팅액에 광개시제를 첨가함으로써 올레핀고분자 다공지지체를 광가교시키기 위한 설비가 추가로 필요하지 않아 공정을 단순화할 수 있다.
Applicant:
LG CHEMICAL LTD [KR] (주식회사 엘지화학)
Inventors:
HAN SUNG-JAE [KR] (한성재)
LEE JOO-SUNG [KR] (이주성)
MUN SUNG CIK [KR] (문성식)
JUNG KIL-AN [KR] (정길안)
Other family members:
KR 20220152080 A,
Pub. Date: 2022-11-15,
EPO/ Google
Titles:
An enhanced coating comprising lithiated graphene oxide
一种包含锂化氧化石墨烯的增强涂层
Abstracts:
The present invention provides an enhanced coating comprising lithiated graphene oxide, and the lithiated graphene oxide has an oxygen-to-carbon elemental ratio of 0.06-0.30 as measured by X-ray photoelectron spectroscopy. The enhanced coating can be used for coating the separator of lithium ion battery, and after coating, the puncture strength of the separator can be enhanced, and at the same time, the problem of gas generation during charging and discharging can be improved, and the safety of the battery can be improved.
Title:
ELECTROCHEMICAL CELLS WITH MULTIPLE SEPARATORS, AND METHODS OF PRODUCING THE SAME
Abstract:
Embodiments described herein relate to electrochemical cells with multiple separators, and methods of producing the same. A method of producing an electrochemical cell can include disposing an anode material onto an anode current collector, disposing a first separator on the anode material, disposing a cathode material onto a cathode current collector, disposing a second separator onto the cathode material, and disposing the first separator on the second separator to form the electrochemical cell. The anode material and/or the cathode material can be a semi-solid electrode material including an active material, a conductive material, and a volume of liquid electrolyte. In some embodiments, less than about 10% by volume of the liquid electrolyte evaporates during the forming of the electrochemical cell. In some embodiments, the method can further include wetting the first separator and/or the second separator with an electrolyte solution prior to coupling the first separator to the second separator.
Applicant:
24M TECH INC [US]
Inventors:
CHEN JUNZHENG [US]
OTA NAOKI [US]
DISKO JEFFRY [US]
D'ANGELO ANTHONY [US]
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