| abstract |
A problem to be solved by the present invention is to provide an active material, a nonaqueous electrolyte battery, a battery pack, and a moving means that are excellent in high-temperature cycle performance, safety, and output performance. An active material according to an embodiment is LiNixM1yO2 or LiMnuM2vO4 (where M1 is at least one element selected from Mn, Co, Al, Ti, Zr, Cr, V, and Nb, and x + y = 1, respectively. , 0 <x ≦ 1.0, 0 ≦ y ≦ 1.0, M2 is at least one element selected from Al, Mg, Ti, Zr, Cr, V and Nb, and u + v = 2, 0 respectively <U ≦ 2.0, 0 ≦ v <2.0).), Wherein the secondary particles have voids therein, and the voids Has a peak in the range of 0.01 μm or more and less than 0.1 μm. [Selection] Figure 1 |