Alkaline cells having high capacity

An electrochemical cell comprising:

• an anode;
• a cathode comprising a cathode active material, the cathode active material comprising a mixture, the mixture comprising a first metal oxide component, a second metal oxide component and a third metal oxide component, wherein the first, second and third metal oxide components are different, and further wherein the first metal oxide component consists of a first metallic element and oxygen, the second metal oxide component consists of a second metallic element different from the first metallic element and oxygen, and the third metal oxide component is a compound comprising the first metallic element manganese and the second metallic element;
• and
• a separator disposed between the anode and the cathode wherein the cathode active material displays a continuous discharge profile that is substantially at least 1.0V for the first 20% of cell discharge when discharged at a discharge rate of 30 mA in a half-cell test.