Title:
MANUFACTURING METHOD OF POSITIVE ELECTRODE CURRENT COLLECTOR COATED WITH ADHESION ENHANCEMENT LAYER, POSITIVE ELECTRODE CURRENT COLLECTOR COATED WITH ADHESION ENHANCEMENT LAYER MANUFACTURED THEREBY, MANUFACTURING METHOD OF POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY MANUFACTURED THEREBY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/080514
Kind Code:
A1
Abstract:
Disclosed is a manufacturing method of a positive electrode current collector coated with an adhesion enhancement layer, the method comprising the steps of: preparing an aqueous-based slurry containing a first binder polymer and a first conductive material at a weight ratio of 0.5:1 to 8:1, the first binder polymer containing polyvinylidene fluoride-based polymer particles having a melting point of 50 to 150°C; and coating the aqueous-based slurry on at least one surface of a metal current collector, followed by thermal treatment and drying at a temperature higher than the melting point of the polyvinylidene fluoride-based polymer particles, to thereby form an adhesion enhancement layer.
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Inventors:
KIM MIN-SOO (KR)
KIM SU-JIN (KR)
SEO JUNG-HYUN (KR)
JUNG SOON-HWA (KR)
KIM SU-JIN (KR)
SEO JUNG-HYUN (KR)
JUNG SOON-HWA (KR)
Application Number:
PCT/KR2022/016295
Publication Date:
May 11, 2023
Filing Date:
October 24, 2022
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/66; H01M4/02; H01M4/13; H01M4/136; H01M4/139; H01M4/1397; H01M4/58; H01M4/62; H01M10/052
Foreign References:
| KR20150050075A | 2015-05-08 | |||
| KR20170045910A | 2017-04-28 | |||
| KR20190109284A | 2019-09-25 | |||
| KR20150045833A | 2015-04-29 | |||
| JP2008084742A | 2008-04-10 | |||
| KR20210150118A | 2021-12-10 | |||
| KR20210150119A | 2021-12-10 |
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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