Title:
METHOD FOR PRODUCING NEGATIVE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2022/119408
Kind Code:
A1
Abstract:
Provided is a method for producing a negative electrode, the method being characterized by comprising the steps of: preparing a lower layer slurry including a first active material, a first binder, and a first dispersion medium, and an upper layer slurry including a second active material, a second binder, and a second dispersion medium; coating the lower layer slurry on one surface of a negative electrode current collector, and coating the upper layer slurry on the lower layer slurry simultaneously or after a predetermined period of time; and forming an active material layer by drying the coated lower layer slurry and the upper layer slurry simultaneously, wherein A is 103 to 300 and B is 1.1 to 3.5 in the following equations. A=B/(drying rate), B=(wt% of the first binder in the solid content of the lower layer slurry)/(wt% of the second binder in the solid content of the upper slurry) drying rate=(total content of the dispersion mediums per unit area of the active material layer)/(drying time) (g/(cm2 X min)).
Inventors:
LEE TAEK-SOO (KR)
KIM YOUNG-GON (KR)
JEON SHIN-WOOK (KR)
CHOY SANG-HOON (KR)
KIM YOUNG-GON (KR)
JEON SHIN-WOOK (KR)
CHOY SANG-HOON (KR)
Application Number:
PCT/KR2021/018294
Publication Date:
June 09, 2022
Filing Date:
December 03, 2021
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M4/04; H01M4/139; H01M4/62; H01M10/052
Foreign References:
| KR20190064480A | 2019-06-10 | |||
| KR20180040268A | 2018-04-20 | |||
| JP2014107182A | 2014-06-09 | |||
| KR20150087864A | 2015-07-31 | |||
| CN110335989B | 2020-09-18 | |||
| KR20200167824A | 2020-12-03 |
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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