Positive electrodes and rechargeable lithium batteries including the same

Abstract

A positive electrode includes a positive electrode current collector and a positive electrode active material layer on the positive electrode current collector and including a positive electrode active material and a binder. The positive electrode active material includes a first positive electrode active material including a lithium iron phosphate-based compound and a second positive electrode active material including a lithium nickel-based composite oxide. The binder includes a first fluorine-based binder not including a polar functional group, and a second fluorine-based binder including a polar functional group. A weight ratio of the first fluorine-based binder to the second fluorine-based binder is in a range of about 1:1 to about 4:1. The rechargeable lithium battery including the positive electrode may exhibit high initial charge/discharge capacity and efficiency even under high voltage driving conditions, and can exhibit long cycle-life characteristics.

Dependencies are inferred from the claim text.