| 摘要 |
Provided are: a positive electrode active material for sodium batteries, which has high operating potential and is capable of charging and discharging at high potential; and a method for producing the positive electrode active material for sodium batteries. A positive electrode active material for sodium batteries, which is characterized by being represented by general formula (1); and a method for producing the positive electrode active material for sodium batteries. General formula (1): NaxMy(AO4)z(P2O7)w (In formula (1), M represents at least one element selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn; A represents at least one element selected from the group consisting of Al, Si, P, S, Ti, V and W; x satisfies 4 = x = 2; y satisfies 4 = y = 1; z satisfies 4 = z = 0; w satisfies 1 = w = 0; and z and/or w is not less than 1.) |
