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Title:
CATHODE FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING CATHODE
Document Type and Number:
WIPO Patent Application WO/2022/035173
Kind Code:
A1
Abstract:
Disclosed are: a cathode for a lithium secondary battery, in which silanized bottom-up graphene oxide (SBGO), obtained by silanizing bottom-up graphene oxide (BGO) prepared through a bottom-up approach, is coated on a cathode active material to prevent the elution of lithium polysulfide, so that the battery performance can be improved; a manufacturing method therefor; and a lithium secondary battery comprising the cathode. The cathode for a lithium secondary battery comprises a cathode active material and BGOs coated on the surface of the cathode active material, wherein the BGOs are cross-linked to each other through a hydrocarbon compound containing a cationic functional group.

Inventors:
KIM SOOHYUN (KR)
LEE JONG-CHAN (KR)
CHOI SEOKIN (KR)
SOHN KWONNAM (KR)
JEONG DAUN (KR)
SHIN HUISEOB (KR)
Application Number:
PCT/KR2021/010542
Publication Date:
February 17, 2022
Filing Date:
August 10, 2021
Export Citation:
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Assignee:
LG ENERGY SOLUTION LTD (KR)
SEOUL NAT UNIV R&DB FOUNDATION (KR)
International Classes:
H01M4/36; C01B32/198; H01M4/02; H01M4/38; H01M4/62; H01M10/052
Foreign References:
KR20190125935A2019-11-07
KR20130121294A2013-11-06
KR20160125064A2016-10-31
CN104852025A2015-08-19
US20190372093A12019-12-05
KR20200100196A2020-08-25
Attorney, Agent or Firm:
KIM, Sung Ho (KR)
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