Apple Inc.
HIGH-ENERGY CATHODE ACTIVE MATERIALS FOR LITHIUM-ION BATTERIES

Abstract:

Compounds that can be used as cathode active materials for lithium ion batteries are described. In some embodiments, the cathode active material includes the compound Li.sub.xNi.sub.aM.sub.bN.sub.cO.sub.2 where M is selected from Mn, Ti, Zr, Ge, Sn, Te and a combination thereof; N is selected from Mg, Be, Ca, Sr, Ba, Fe, Ni, Cu, Zn, and a combination thereof; 0.9<x<1.1; 0.7<a<1; 0<b<0.3; 0<c<0.3; and a+b+c=1. Other cathode active materials, precursors, and methods of manufacture are presented.