Back to results
US 2011/0086274 A1Published application
Cathode active material for lithium secondary battery
AssigneeLG Chem, Ltd.
InventorsSung kyun Chang, Hong-Kyu Park, Sinyoung Park
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a cathode active material based on lithium nickel-manganese-cobalt oxide represented by Formula 1, wherein an ion-conductive solid compound and conductive carbon are applied to a surface of the lithium nickel-manganese-cobalt oxide. A lithium secondary battery having the disclosed cathode active material has improved rate properties and high temperature stability, in turn embodying excellent cell performance.
Claims15
A cathode active material, comprising:
- a lithium nickel-manganese-cobalt oxide represented by Formula (I), wherein an ion-conductive solid compound and conductive carbon are applied to a surface of the foregoing oxide:
- LixMyO2 (1)
- wherein M is Ni1-a-bMnaCOb (0.05≦a≦0.4, 0.1≦b≦0.4, 0.4≦(1-a-b)≦0.9), x+y is about 2 and 0.95≦x≦1.15.
Dependencies are inferred from the claim text.