Process of synthesizing cathode material

A process of synthesizing a target cathode material, comprising:

• (i) mixing a P source containing element P with a first metal source containing one or more metal elements selected from Fe, Mn, Co, Ni, Cu, Zn, Al, Ca, Mg, Ti, V, Cr, Mo or any combination thereof, to form a first intermediate material, wherein a portion of at least one element among said one or more metal elements is oxidized;
• (ii) mixing and reacting the first intermediate material with an oxidizing agent to oxidize a remaining portion of said at least one element among said one or more metal elements, to form a second intermediate material without any further processing;
• and
• (iii) immediately after the second intermediate material is produced in step (ii), mixing it with one or more add-on source materials selected from a P source containing element P, a first metal source containing one or more metal elements selected from Fe, Mn, Co, Ni, Cu, Zn, Al, Ca, Mg, Ti, V, Cr, Mo or any combination thereof, and a second metal source containing one or more elements selected from Li, Na, K or any combination thereof;
• wherein said one or more add-on source materials are introduced in an amount or amounts that are needed for accomplishing a formula of the target cathode material;
• and
• wherein said steps (i), (ii) and (iii) are conducted in one single container.