A includes a cathode active material including a lithium transition metal oxide, wherein the lithium transition metal oxide includes nickel and a non-nickel transition metal, and an amount of the nickel in the lithium transition metal oxide is about 50 mole percent or greater with respect to a total number of moles of transition metals in the lithium transition metal oxide, a conducting agent including a linear carbonaceous conducting agent, and a binder, wherein the binder includes a first fluorinated binder not including a polar functional group, a second fluorinated binder including a polar functional group, a first non-fluorinated binder including a cyano group, and a second non-fluorinated binder including a cyanoalkyl group.