| abstract |
An active material for a battery that can exhibit a non-aqueous electrolyte battery that can exhibit a high energy density and a high battery voltage and that has excellent life characteristics is provided. An active material including a complex oxide having an orthorhombic crystal structure is provided. This composite oxide is represented by the general formula Li x M 1 1 -y M 2 y Ti 6 -z M 3 z O 14 + δ . Here, M1 is at least one selected from the group consisting of Sr, Ba, Ca, and Mg. M2 is at least one selected from the group consisting of Cs, K and Na. M3 is at least one selected from the group consisting of Al, Fe, Zr, Sn, V, Nb, Ta and Mo. x is in the range of 2 ≦ x ≦ 6. y is in the range of 0 <y <1. z is in the range of 0 <z ≦ 6. δ is in the range of −0.5 ≦ δ ≦ 0.5. [Selection] Figure 1 |