Positive electrode active material, preparation method therefor and use thereof
AssigneeContemporary Amperex Technology (Hong Kong) Limited
InventorZhenguo Zhang
Life of this patent
Estimating the term…
Abstract
The present application provides a positive electrode active material, a preparation method therefor and the use thereof. The positive electrode active material may comprise a spinel lithium nickel manganese oxide material, wherein the spinel lithium nickel manganese oxide material has the following chemical formula: LiaNi0.5−xMn1.5−yMx+yO4, wherein M is selected from at least one of Mg, Zn, Ti, Zr, W, Nb, Al, B, P, Mo, V, or Cr, 0.9≤a≤1.1, −0.2≤x≤0.2, −0.02≤y≤0.3, and x+y≥0; the Mn3+ content in the spinel lithium nickel manganese oxide material may be less than or equal to 0.7 wt %.
Claims16
A positive electrode active material comprising a spinel lithium nickel manganese oxide material, wherein the spinel lithium nickel manganese oxide material has a volume mean particle size between 2 μm to 24 μm and the following chemical formula:
- LiaNi0.5-xMn1.5-yMx+yO4, wherein M is selected from at least one of Mg, Zn, Ti, Zr, W, Nb, Al, B, P, Mo, V, or Cr, 0.9≤a≤1.1, −0.2≤x≤0.2, −0.02≤y≤0.3, and x+y≥0;
- and
- a Mn3+ content in the spinel lithium nickel manganese oxide material is 0.2 wt % to 0.7 wt %.
Dependencies are inferred from the claim text.