US 12,230,765 B2
Method of producing laminate for secondary battery
Masanobu Sato, Tokyo (JP); Masuhiro Oonishi, Tokyo (JP); Hiroshi Koga, Tokyo (JP); and Keiichiro Tanaka, Tokyo (JP)
Assigned to ZEON CORPORATION, Tokyo (JP)
Appl. No. 16/975,392
Filed by ZEON CORPORATION, Tokyo (JP)
PCT Filed Feb. 1, 2019, PCT No. PCT/JP2019/003729
§ 371(c)(1), (2) Date Aug. 25, 2020,
PCT Pub. No. WO2019/163489, PCT Pub. Date Aug. 29, 2019.
Claims priority of application No. 2018-032347 (JP), filed on Feb. 26, 2018.
Prior Publication US 2021/0036375 A1, Feb. 4, 2021
Int. Cl. H01M 10/0585 (2010.01); H01M 4/04 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/0585 (2013.01) [H01M 4/04 (2013.01); H01M 10/0525 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method of producing a laminate for a secondary battery including an electrode and a separator that are affixed to each other, comprising:
a step (A) of forming an adhesive material on an affixing surface of at least one of the electrode and the separator;
a step (B) of, after the step (A), conveying the electrode and the separator to an affixing start position without bringing another member into contact with the affixing surface on which the adhesive material has been formed; and
a step (C) of, after the step (B), affixing the electrode and the separator to each other via the affixing surface, wherein
a formed amount of the adhesive material in the step (A) is not less than 0.1 g/m2 and not more than 100 g/m2,
the adhesive material is formed of a polymer,
the formation of the adhesive material, in the step (A), is performed by an inkjet method using a composition for adhesion containing the adhesive material and a solvent,
the composition for adhesion has surface tension of 20 mN/m or more, and 65 mN/m or less, and
a cross-sectional shape of the adhesive material is a protruding-depressed shape or a depressed shape.