Patent ID: 8182948
Filing Date: 2012-05-22
Classification: C01B,H01M,Y02E,Y10T

Abstract:
1. A separator of a lithium ion battery, comprising a porous membrane and a modifier layer disposed on a surface of the porous membrane, wherein a material of the modifier layer comprises a dried reaction product fabricated from a phosphorous source having a phosphate radical, a trivalent aluminum source, and a metallic oxide provided in a liquid phase solvent, a molar ratio of the trivalent aluminum source, the metallic oxide, and the phosphorous source is set by (Mol Al +Mol Metal ):Mol p =about 1:2.5 to about 1:4, Mol Al is the amount of substance of an aluminum element in the trivalent aluminum source, Mol Metal is the amount of substance of a metallic element in the metallic oxide, and Mol p is the amount of substance of a phosphorous element in the phosphorous source.