Patent ID: 7811707

Claim:
A lithium-ion battery having a cathode that includes an active cathode material, the active cathode material comprising a cathode mixture that includes: a) a lithium cobaltate; and b) a manganate spinel represented by an empirical formula of Li (1+x1) (Mn 1−y1 A′ y2 ) 2−x2 O z1 where: x1 and x2 are each independently equal to or greater than 0.01 and equal to or less than 0.3; y1 and y2 are each independently equal to or greater than 0.0 and equal to or less than 0.3; z1 is equal to or greater than 3.9 and equal to or less than 4.1; and A′ is at least one member of the group consisting of magnesium, aluminum, cobalt, nickel and chromium, wherein the lithium cobaltate and the manganate spinel are in a weight ratio of lithium cobaltate:manganate spinel between about 0.95:0.05 to about 0.55:0.45.