Patent ID: 8815433
Filing Date: 2014-08-26
Classification: C08J,H01M,Y02E,Y02P,Y10T

Abstract:
1. A method for manufacturing a separator, comprising steps: (S1) preparing a porous, planar substrate having a plurality of pores; (S2) preparing a slurry containing inorganic particles dispersed therein and a polymer solution comprising a first binder polymer and a second binder polymer in a solvent, and coating the slurry on at least one surface of the porous substrate so as to create a slurry coating layer; (S3) spraying a non-solvent incapable of dissolving the second binder polymer on the slurry, such that the non-solvent sprayed on the slurry coating layer promotes phase separation of the second binder polymer in the slurry to allow a larger amount of the second binder polymer to be distributed on the surface of the slurry coating layer; and (S4) simultaneously removing the solvent and the non-solvent by drying; wherein steps (s1) to (S4) are suitable for manufacturing a separator for an electrochemical device.