Patent ID: 9590235
Date: 2017-03-07
CPC Classifications: C01G,C01P,H01M,Y02E,Y02P

Claim:
1. A cathode active material comprising: a lithium transition metal oxide of the general formula wherein 0.65≦a+b≦0.85, 0.1≦b≦0.4, A is a dopant, 0≦k<0.05, and 0.95≦x≦1.05, said lithium transition metal oxide being substantially free of soluble bases such that less than about 20 ml of 0.1M HCl is necessary to titrate 200 ml of a solution containing substantially all of the soluble bases present in 10 g of said lithium transition metal oxide to a pH less than 5, said solution being prepared by repeated soaking and decanting of said lithium transition metal oxide.