Positive electrode active material and battery
AssigneeToyota Jidosha Kabushiki Kaisha
InventorRyosuke OHSAWA
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Abstract
The present disclosure provides a positive electrode active material, in which the positive electrode active material has crystalline primary particles containing Li, TM (TM is a transition metal), and O, the positive electrode active material is a single crystal active material made of the primary particles, a compound A containing La, Ni, and O and a compound B containing Li, W, and O are present on a surface of the primary particles, the compound A has a particle shape, the compound B has a film shape, and the compound B covers the surface of the primary particles and covers a surface of the compound A, thereby solving the above-described problem.
Claims5
A positive electrode active material comprising primary particles that have crystallinity, the primary particles containing Li, a transition metal (TM), and O, wherein:
- the positive electrode active material is a single crystal active material made of the primary particles;
- a compound A containing La, Ni, and O and a compound B containing Li, W, and O are present on a surface of the primary particles;
- the compound A has a particle shape;
- the compound B has a film shape;
- and
- the compound B covers the surface of the primary particles and covers a surface of the compound A.
Dependencies are inferred from the claim text.