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
Positive electrode material for rechargeable lithium ion batteries
US2025239604A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025239604-A1 |
| Application number | US-202519050762-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 11, 2025 |
| Priority date | Mar 29, 2018 |
| Publication date | Jul 24, 2025 |
| Grant date | — |
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Abstract
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A powderous positive electrode material comprises single crystal monolithic particles comprising Ni and Co and having a general formula Li1+a(Niz(Ni1/2Mn1/2)yCox)1−kAk)1−aO2, wherein A is a dopant, −0.03≤a≤0.06, 0.05≤x≤0.35, 0.10≤z≤0.95, x+y+z=1 and k≤0.05. The particles have a particle size distribution with a D50 between 2.0 μm and 8.0 μm and with a span≤1.5.
First claim
Opening claim text (preview).
1 . A powderous positive electrode material comprising single crystal monolithic particles comprising Ni and Co and having a general formula Li 1+a ((Ni z (Ni 1/2 Mn 1/2 ) y CO x ) 1−k A k ) 1−a O 2 , wherein A is a dopant, −0.03≤a≤0.06, 0.05≤x≤0.35, 0.10≤z≤0.95, x+y+z=1 and k≤0.05, the particles having a particle size distribution with a D50 between 2.0 μm and 8.0 μm, and with a span≤1.5. 2 . The powderous positive electrode material of claim 1 , wherein the dopant comprises one or more of Al, Mg, Zr, Nb, Si, P, Mo, Ba, Sr, Ca, Zn, Cr, V, and Ti. 3 . The powderous positive electrode material of claim 1 , wherein the span is 0.9-1.3. 4 . The powderous positive electrode material of claim 1 , wherein the single crystal monolithic particles have surfaces covered by Al. 5 . The powderous positive electrode material of claim 1 , wherein k=0. 6 . The powderous positive electrode material of claim 1 , wherein 0.38≤z≤0.83. 7 . The powderous positive electrode material of claim 1 , wherein 0.14≤x≤0.24. 8 . The powderous positive electrode material of claim 1 , wherein the carbon concentration is ≤195 ppm. 9 . The powderous positive electrode material of claim 1 , wherein the D50 between 3.2 μm and 6.5 μm.
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Classifications
Positive electrodes · CPC title
Physical characteristics, e.g. porosity, surface area · CPC title
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title
Electric properties · CPC title
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- What does patent US2025239604A1 cover?
- A powderous positive electrode material comprises single crystal monolithic particles comprising Ni and Co and having a general formula Li1+a(Niz(Ni1/2Mn1/2)yCox)1−kAk)1−aO2, wherein A is a dopant, −0.03≤a≤0.06, 0.05≤x≤0.35, 0.10≤z≤0.95, x+y+z=1 and k≤0.05. The particles have a particle size distribution with a D50 between 2.0 μm and 8.0 μm and with a span≤1.5.
- Who is the assignee on this patent?
- Umicore Nv, Umicore Korea Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jul 24 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).