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US 12,620,590 B2Granted
Method of washing positive electrode active material, and positive electrode active material prepared thereby
AssigneeLG Chem, Ltd.
InventorsWon Sig Jung, Sang Soon Choi, Hyun Ah Park
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Abstract
A positive electrode active material includes a lithium composite transition metal oxide and a lithium by-product present on the surface of the lithium composite transition metal oxide. The lithium by-product is included at 0.3 mol % to 0.41 mol % with respect to a total mole number of the lithium composite transition metal oxide, and Li2CO3 and LiOH are included at a molar ratio of 1:1.8 to 1:3. A positive electrode including the positive electrode active material and a lithium secondary battery including the positive electrode are also provided.
Claims6
A positive electrode active material, comprising:
- a lithium composite transition metal oxide and a lithium by-product present on a surface of the lithium composite transition metal oxide,
- wherein the lithium by-product is Li2CO3 and LiOH and included at 0.32 mol % to 0.41 mol % with respect to a total mole number of the lithium composite transition metal oxide, and Li2CO3 and LiOH are included at a molar ratio of 1:1.8 to 1:3, and
- wherein the lithium composite transition metal oxide includes Ni, Co, and Mn, and an Ni content is 60 mol % or more.
Dependencies are inferred from the claim text.