Method for preparing positive electrode material for secondary cell, and secondary cell

摘要

A method for producing a cathode material for a secondary battery, characterized in that it comprises admixing a compound liberating a phosphate ion in a solution (phosphoric acid H₃PO₄, phosphorus pentoxide PO₅, ammonium dihydrogenphosphate NH₄H₂PO₄ and the like), water and metallic iron, adding lithium carbonate, lithium hydroxide or a hydrate thereof to the resultant mixture, and firing the resultant reaction product , to thereby synthesize LiFePO₄.