| abstract |
The positive electrode active material for electric devices contains a 1st active material and a 2nd active material. The first active material is formula (1) Li 1 .5 [Ni a Co b Mn c [Li] d] O 3 ... (One) (In formula (1), a, b, c, and d satisfy a relationship of 0 <d <0.5, a + b + c + d = 1.5, 1.0 <a + b + c <1.5)) Made of metal oxides. The second active material is formula (2) LiM a ' Mn 2 - a' O 4 ... (2) (In formula (2), M represents at least 1 sort (s) of metal element of 2-4, and a 'satisfy | fills the relationship of 0 <= a'<2.0.), And a crystal structure is represented by space group Fd-3m. It is composed of the spinel-type transition metal oxide attributable. And the content rate of a 1st active material and a 2nd active material is Formula (3) by mass ratio. 100: 0 <M A : M B <0: 100... (3) In formula (3), M A satisfies the relationship expressed by the mass of the first active material and M B represents the mass of the second active material. |