Patent ID: 8252463
Filing Date: 2012-08-28
Classification: C01B,H01M,Y02E,Y10T

Abstract:
1. A modified current collector of a lithium ion battery, comprising a metal plate and a protective film disposed on a surface of the metal plate, wherein a composition of the protective film consists of Al x M y PO 4 , M represents at least one chemical element selected from the group consisting of Cr, Zn, Mg, Zr, Mo, V, Nb, and Ta, and a valence of M is represented by k, wherein 0<x<1, 0<y<1, and 3x+ky=3, and a molar ratio of an aluminum element, an M element, and a phosphorous element in the Al x M y PO 4 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 the aluminum element Mol Metal is the amount of substance of the M element, and Mol p is the amount of substance of the phosphorous element.