Title:
NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, LITHIUM SECONDARY BATTERY COMPRISING SAME, AND METHOD FOR MANUFACTURING LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/080786
Kind Code:
A1
Abstract:
The present invention relates to a negative electrode for a lithium secondary battery, a lithium secondary battery comprising same, and a method for manufacturing the lithium secondary battery, and can improve the lifespan characteristics of the lithium secondary battery. The negative electrode is characterized by comprising: a negative electrode current collector; and a negative electrode active material layer formed on at least one surface of the negative electrode current collector and including a Si-based negative active material, a conductive material, and a first binder polymer, wherein the Si-based negative active material comprises cracks formed after an activation process, a second binder polymer is coated between the cracks, and the first binder polymer and the second binder polymer are different from each other.
Inventors:
KIM YOUNG-JAE (KR)
KIM MIN-JI (KR)
CHAE JONG-HYUN (KR)
KIM MIN-JI (KR)
CHAE JONG-HYUN (KR)
Application Number:
PCT/KR2021/013949
Publication Date:
April 21, 2022
Filing Date:
October 08, 2021
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M4/134; H01M4/04; H01M4/131; H01M4/38; H01M4/48; H01M4/62; H01M10/058; H01M50/446; H01M50/449
Foreign References:
| JP2020095812A | 2020-06-18 | |||
| JP6763410B2 | 2020-09-30 | |||
| KR20200078416A | 2020-07-01 | |||
| KR20200019390A | 2020-02-24 | |||
| KR20180049401A | 2018-05-11 | |||
| JP2013084377A | 2013-05-09 | |||
| KR20200132199A | 2020-11-25 |
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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