Patent ID: 9224514
Filing Date: 2015-12-29
Classification: C01G,C01P,H01B,H01M,Y02E

Abstract:
1. A cathode active material for a lithium ion battery, represented by a composition formula: wherein M is one or more selected from Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Ga, Ge, Al, Bi, Sn, Mg, Ca, B, and Zr; 0.9≦x≦1.2; 0<y≦0.7; and α>0.1, wherein a first moisture content measured by Karl Fischer titration at 300° C. is 1,100 ppm or lower and, a difference between the first moisture content measured by Karl Fischer titration at 300° C. and a second moisture content measured by Karl Fischer titration at 150° C. is 100to 500 ppm; further wherein a third moisture content measured by Karl Fischer titration at 150° C. is 300 ppm or lower after the cathode active material is left at a dew point of −80° C. for 24 hours.