SECONDARY CELL

1 . A secondary cell, comprising:

a positive electrode;

a negative electrode; and

an electrolytic solution,

wherein a positive electrode mixture of the positive electrode contains:

LiOH;

Li a Ni b Co c A d B e O 2 which is a positive electrode active material (a, b, c, d, and e satisfy 1.0≤a≤1.1, 0.45≤b≤0.90, 0.05≤c+d≤0.55, and 0≤e≤0.006, A contains at least one of Mn and Al, and B contains at least one of Al, Mg, Mo, Ti, W and Zr); and

an oxide, and

the oxide contains at least one of aluminum oxide, magnesium oxide, molybdenum oxide, titanium oxide, tungsten oxide, and zirconium oxide.

2 . The secondary cell according to claim 1 ,

wherein the oxide is provided on a surface of the positive electrode active material.

3 . The secondary cell according to claim 2 ,

wherein at least one of aluminum fluoride, magnesium fluoride, molybdenum fluoride, titanium fluoride, tungsten fluoride, and zirconium fluoride is provided on the surface of the positive electrode active material.

4 . The secondary cell according to claim 2 ,

wherein an amount of the oxide is 0.1 wt % or more and 1.0 wt % or less with respect to the positive electrode active material.

5 . The secondary cell according to claim 4 ,

wherein an amount of the LiOH is 0.5 wt % or more and 2.0 wt % or less with respect to the positive electrode active material.

6 . The secondary cell according to claim 4 ,

wherein a coverage of the oxide to the positive electrode active material is 30% or more and 90% or less.