Title:
METHOD FOR MANUFACTURING SECONDARY BATTERY ELECTRODE COMPRISING PRE-SLITTING PROCESS
Document Type and Number:
WIPO Patent Application WO/2018/066806
Kind Code:
A1
Abstract:
The present invention provides a method for manufacturing a secondary battery electrode, comprising the processes of: (a) continuously forming two or more slurry coating portions on one surface or both surfaces of a metal foil in a second direction, which is the longitudinal direction of the metal foil, such that, between slurry coating portions coated with electrode slurry comprising an electrode active material, a blank portion coated with no electrode slurry is positioned in a first direction, which is the transverse direction of the metal foil; (b) drying the slurry coating portions and rolling the same by rollers, thereby forming mixture coating portions; and (c ) slitting the blank portion in the second direction, thereby forming electrode strips, wherein the method further comprises a process of forming non-continuous linear slits on the blank portion of the metal foil in the second direction before process (a), during process (a), or between process (a) and process (b).
Inventors:
PARK SANG YOUN (KR)
CHOI KYU HYUN (KR)
KONG JIN HAK (KR)
CHOI KYU HYUN (KR)
KONG JIN HAK (KR)
Application Number:
PCT/KR2017/008719
Publication Date:
April 12, 2018
Filing Date:
August 11, 2017
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/139; H01M4/04; H01M4/13; H01M50/531
Foreign References:
| JP2008066050A | 2008-03-21 | |||
| JP2016001575A | 2016-01-07 | |||
| JP2014072114A | 2014-04-21 | |||
| JP2000208129A | 2000-07-28 | |||
| KR20100101644A | 2010-09-17 |
Other References:
See also references of EP 3404745A4
Attorney, Agent or Firm:
KIM, Hong Gyun (KR)
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