Positive electrode material, positive electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
A positive electrode material includes: a composite oxide of solid solution including Li 2 SnO 3 and Li 2 Ni α M 1 β M 2 γ Mn ν O 4-∈ . α satisfies an equation of 0.50≤α≤1.35. β satisfies an equation of 0≤β<1.0. γ satisfies an equation of 0≤γ≤0.66. β and γ satisfies an equation of 0.33≤β+γ≤1.1. ν satisfies an equation of 0≤ν≤0.66. ∈ satisfies an equation of 0≤∈≤1.00. M 1 represents at least one selected from Sn, Sb 0.5 Al 0.5 . M 2 represents Sb.
1. A positive electrode material comprising:
a composite oxide of solid solution including at least one of xLi 2 Ni 1.33 Sb 0.66 O 4 -(1−x)Li 2 SnO 3 and xLi 2 NiSn β Mn ν O 4 -(1−x)Li 2 SnO 3 wherein:
β satisfies an equation of 0<β<1.0;
ν satisfies an equation of 0≤ν≤0.66;
x satisfies an equation of 0.5<x<0.95; and
ν and β satisfies an equation of ν+β=1.0.
2. A positive electrode for a non-aqueous electrolyte secondary battery comprising:
the positive electrode material according to claim 1 .
3. A non-aqueous electrolyte secondary battery comprising:
a positive electrode for a non-aqueous electrolyte secondary battery which includes the positive electrode material according to claim 1 .