Beta-delithiated layered nickel oxide electrochemically active cathode material and a battery including said material

A battery comprising:

• a cathode comprising a conductive additive and an electrochemically active cathode material, the electrochemically active cathode material comprising a beta-delithiated layered nickel oxide;
• an anode comprising an electrochemically active anode material, the electrochemically active anode material comprising zinc;
• a separator between said cathode and said anode;
• and
• an electrolyte;
• wherein the beta-delithiated layered nickel oxide has an X-ray diffraction pattern comprising a first peak from about 14.9°2θ to about 16.0°2θ;
• a second peak from about 21.3°2θ to about 22.7°2θ;
• a third peak from about 37.1°2θ to about 37.4°2θ;
• a fourth peak from about 43.2°2θ to about 44.0°2θ;
• a fifth peak from about 59.6°2θ to about 60.6°2θ;
• and a sixth peak from about 65.4°2θ to about 65.9°2θ.