Composite positive electrode active material
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHideaki Watanabe
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Abstract
In a composite positive electrode active material including a lithium metal oxide as a positive electrode active material and a covering layer covering at least part of a surface of the positive electrode active material, the covering layer contains an Li element, a B element, and an O element, a molar ratio Li/B of the Li element to the B element in the covering layer is 1.5 to 3.0, and a coverage rate of the covering layer covering the positive electrode active material is 80% or more.
Claims5
A composite positive electrode active material including a lithium metal oxide as a positive electrode active material and a covering layer covering at least part of a surface of the positive electrode active material, wherein:
- the covering layer contains an Li element, a B element, and an O element;
- a molar ratio Li/B of the Li element to the B element in the covering layer is 1.5 to 3.0;
- and
- a coverage rate of the covering layer covering the positive electrode active material is 84%-89%.
Dependencies are inferred from the claim text.