Patent ID: 9478799
Filing Date: 2016-10-25
CPC Classification: H01M,Y02E

Claim Text:
1. A rechargeable lithium battery, comprising an electrolyte comprising a lithium salt and a non-aqueous organic solvent; a negative electrode, said negative electrode comprising: i) a current collector; and ii) a negative active material layer formed on the current collector, and including a binder and a negative active material, said negative active material consisting of: a positive electrode, said positive electrode comprising a positive active material having charge and discharge efficiency of less than or equal to about 95%, wherein the positive active material is a mixture of a first positive active material where the first positive active material is a lithium cobalt-based oxide and a second positive active material where the second positive active material is a lithium nickel cobalt manganese-based oxide having an average particle diameter of about 5 μm to about 15 μm, and the first and second positive active material are mixed in a weight ratio ranging from about 8:2 to about 6:4.