Patent ID: 11862812
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 16:
17. A method of manufacturing a composite separator, of claim 1, the method comprising:
providing the porous substrate;
preparing a stacked structure by coating a composition comprising the water-soluble binder, the inorganic particles, and water on one surface or opposite surfaces of the porous substrate; and
drying the stacked structure to form the coating layer on the at least one surface of the porous substrate,
wherein the coating layer comprises the water-soluble binder and the inorganic particles, and the water-soluble binder comprises the polyacrylic acid metal salt, and the weight average molecular weight of the polyacrylic acid metal salt is 300,000 Dalton to 450,000 Dalton, and the average particle diameter (D50) of the inorganic particles is about 500 nm or more.