Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Cathode active material having controlled rheological properties for a lithium secondary battery
US2025054948A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025054948-A1 |
| Application number | US-202318529028-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 5, 2023 |
| Priority date | Aug 8, 2023 |
| Publication date | Feb 13, 2025 |
| Grant date | — |
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- Title
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Abstract
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A cathode active material with controlled rheological properties for lithium secondary batteries. In particular, the cathode active material for a lithium secondary battery includes: a core part comprising a lithium metal oxide; and a coating layer covering at least a portion of a surface of the core part and comprising an inorganic compound.
First claim
Opening claim text (preview).
What is claimed is: 1 . A cathode active material for a lithium secondary battery, the cathode active material comprising: a core part comprising a lithium metal oxide; and a coating layer covering at least a portion of a surface of the core part and comprising an inorganic compound. 2 . The cathode active material of claim 1 , wherein the cathode active material has a flow angle in a range of 20° to 55°. 3 . The cathode active material of claim 1 , wherein the cathode active material has a cohesive index in a range of 10 to 20. 4 . The cathode active material of claim 1 , wherein the cathode active material has a roughness index in a range of 1.30 to 1.50. 5 . The cathode active material of claim 1 , wherein the cathode active material has a coefficient of surface friction in a range of 0.8 to 1.2. 6 . The cathode active material of claim 1 , wherein the cathode active material has a flow angle in a range of 20° to 55°, a cohesive index of 10 to 20, a roughness index in a range of 1.30 to 1.50, and a coefficient of surface friction in a range of 0.8 to 1.2. 7 . The cathode active material of claim 1 , wherein the lithium metal oxide is represented by Li a (Ni x M1 y M2 z )O 2 , wherein M1 comprises Co, Mn, Ni, Al, Mg, or Ti, wherein M2 comprises Ca, Mg, Al, Ti, Sr, Fe, Co, Mn, Ni, Cu, Zn, Y, Zr, Nb, or B, and wherein 0<a≤1, 0.7≤x≤1, 0≤y≤0.3, 0≤z≤0.3, and x+y+z=1 are satisfied. 8 . The cathode active material of claim 1 , wherein the coating layer comprises LiNbO 3 , Li 2 ZrO 3 , Li 3 PO 4 , Li 2 SiO 3 , or combinations thereof. 9 . The cathode active material of claim 1 , wherein the cathode active material comprises 90% to 99% by weight of the core part and 1% to 10% by weight of the coating layer.
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Classifications
Energy storage using batteries · CPC title
Positive electrodes · CPC title
Physical characteristics, e.g. porosity, surface area · CPC title
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
- H01M4/366Primary
as layered products · CPC title
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- What does patent US2025054948A1 cover?
- A cathode active material with controlled rheological properties for lithium secondary batteries. In particular, the cathode active material for a lithium secondary battery includes: a core part comprising a lithium metal oxide; and a coating layer covering at least a portion of a surface of the core part and comprising an inorganic compound.
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Corp, Wonik Qnc Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Feb 13 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).