Patent ID: 7964117

Claim:
A process of manufacturing an electrochemical redox active material comprising steps of: reacting a metal particle with a phosphate- or arsenate-containing compound to prepare a metallic compound MO 4-y XO y , where M is at least one selected from a group consisting of transition metals and semimetals, X is P or As, and 0<y<4; milling and performing an alkalinization reaction of an alkali metal ion A(I), said metallic compound and an inorganic carrier M′O to prepare a semicrystalline nano-scale particle mixture containing MO 4-y XO y /A(I)/M′O, where M′ is at least one selected from a group consisting of transition metals and Mg; drying said solution into a precursor; and calcining said precursor in the presence of an inert gas to form a cocrystalline metallic compound having a general formula A x MO 4-y XO y ′M′O, where 0.9≦x≦1.1.