Method and systems for coated cathode materials and use of coated cathode materials

A method, comprising:

• preparing a cathode material and a coating;
• combining the cathode material with the coating;
• and
• mixing the cathode material and the coating in a dry milling process, wherein the cathode material comprises either a lithium nickel manganese cobalt oxide (NCM) or a lithium nickel cobalt aluminum oxide (NCA), wherein the NCM comprises a composition of LiaNixMnyCo1-x-y-zDzO2, wherein 1.0≤a≤1.10, 0.1≤x≤0.9, 0.05≤y≤0.3, 0≤z≤0.05, and x+y+z≤1, and the NCA comprises a composition of LiaNixCoyAl1-x-y-zDzO2, wherein 1.0≤a≤1.10, 0.1≤x≤0.9, 0.05≤y≤0.3, 0≤z≤0.05, and x+y+z≤1, and where D is Al, Zr, Mg, Sc, Fe, V, or Nb for each of the NCM and the NCA;
• and
• the coating comprises a lithium vanadium fluorophosphate (LVPF) and/or a lithium iron manganese phosphate (LFMP), wherein the LVPF comprises a composition of LiVPO4F and the LFMP comprises a composition of LiaFe1-x-yMnxDy(PO4)z, wherein 1.0≤a≤1.10, 0<x≤0.5, 0≤y≤0.1, 1.0<z≤1.1, and D is Ni, V, Co, or Nb, and where each of the LVPF and the LFMP is doped with one or more of V, Co, Ni, Nb, Ti, Al, Zr, Ta, W, and Mg.