Patent ID: 8389160
Filing Date: 2013-03-05
Classification: C01G,C01P,H01M,Y02E

Abstract:
1. A positive electrode active material for a lithium ion cell having a discharge capacity at a 10th discharge cycle of at least 250 mAh/g at room temperature at a discharge rate of C/3 when discharged from 4.6 volts to 2.0 volts after the material is activated in the first cycle through a charge to 4.6V at a rate of C/10, comprising a lithium metal oxide composition having a formula Li wherein the positive electrode active material has a first cycle irreversible capacity loss at a discharge rate of C/10 of no more than about ⅔ of the first cycle irreversible capacity loss of the lithium metal oxide composition, which corresponds to the positive electrode active material without the stabilization coating.