| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrode active material having a very large charge/ discharge capacity, an electrode using the electrode active material, and a nonaqueous electrolyte secondary battery. SOLUTION: Poly acidic salt wherein oxo acid is condensed is used as an electrode active material for a nonaqueous electrolyte secondary battery. Poly atom of the poly acidic salt is at least one selected from among Mo, W, Nb and V. The poly acidic salt is represented by the following expression 1; AxBD12 O40 ...(1). Where, A is Cs<+> , NH4 <+> and Pb<+> , B is one selected from among P, Si, As and Ge, and D is one selected from among Mo, W, Nd and V. |
