| abstract |
The present invention has an object of providing a positive-electrode material for a non-aqueous electrolyte secondary battery having a 2− or higher dimensional lithium diffusion network structure of high lithium capacity, containing phosphoric acid of high thermal stability, and having lithium ions in which the ratio of the charge, compensation center and lithium ions exceeds 1:2. That is, a positive-electrode material for a secondary battery comprising a compound represented by the general formula A 4−x M(PO 4 ) 2 , and an electrode and a battery containing the same are provided. In the formula, M represents a transition metal (preferably, at least one member selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn), A represents at least one of elements selected from alkali metals including Li, Na and K, and X represents 0≦X≦4. |