Patent ID: 11901578
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A separator comprising
a porous substrate; and a porous adhesive layer formed on a first side surface of the porous substrate and/or a second side surface of the porous substrate facing away from the first side surface,
wherein the porous adhesive layer comprises polyvinylidene fluoride-based polymer microparticles having an average diameter of 200 nm to 700 nm, a nitrogen-containing binder, and inorganic particles, and the total thickness of the porous adhesive layer is 1 μm or less,
wherein the nitrogen-containing binder is polyethyleneimine having a weight average molecular weight of 50,000 to 100,000 g/mol, and
wherein the inorganic particles are included in an amount of 10 to 20 wt % based on a total solid weight of the porous adhesive layer.