WO2023117664 - A POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY LITHIUM-ION BATTERIES
National phase entry:
Publication Number
WO/2023/117664
Publication Date
29.06.2023
International Application No.
PCT/EP2022/086063
International Filing Date
15.12.2022
Title **
[English]
A POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY LITHIUM-ION BATTERIES
[French]
MATÉRIAU ACTIF D'ÉLECTRODE POSITIVE POUR BATTERIES LITHIUM-ION SECONDAIRES
Applicants **
UMICORE
Inventors
SONG, KyeongSe
KU, HeeSuk
BLANGERO, Maxime
Priority Data
21217447.8
23.12.2021
EP
Application details
| Total Number of Claims/PCT | * |
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| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2198 | |
| EPO | Filing, Examination, Granting | 11174 | |
| Japan | Filing, Examination, Granting | 2338 | |
| South Korea | Filing, Examination, Granting | 2448 | |
| USA | Filing, Examination, Granting | 6740 |
Total:
24,898
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
A positive electrode active material for lithium-ion secondary batteries, wherein said positive electrode active material comprises Li, Co, O, and optionally M' wherein M' comprises Al an/or Ti, and optionally one or more elements selected from : Ni, Mn, B, Sr, Mg, Nb, W, F, and Zr, wherein a molar ratio of Co to M'+Co (Co/(M'+Co)) is more than 0.90 and, as determined by ICP-OES analysis,wherein the positive electrode active material comprises a first LCO powder and a second LCO powder that are both single-crystalline powders, wherein the first LCO powder has a first median particle size D50A of between 12 µm and 25 µm, as determined by laser diffraction particle size analysis, wherein the second LCO powder has a second median particle size D50B of between 3 µm and 8 µm, as determined by laser diffraction particle size analysis, wherein the volume fraction of the second LCO powder relative to the total volume of the positive electrode active material is between 10% and 40%, as determined by laser diffraction particle size analysis.[French]
L'invention concerne un matériau actif d'électrode positive pour batteries secondaires au lithium-ion, ledit matériau actif d'électrode positive comprenant Li, Co, O, et éventuellement M', M' comprenant Al et/ou Ti, et éventuellement un ou plusieurs éléments choisis parmi : Ni, Mn, B, Sr, Mg, Nb, W, F et Zr, un rapport molaire de Co à M'+Co (Co/(M'+Co)) étant supérieur à 0,90 et, tel que déterminé par analyse ICP-OES, le matériau actif d'électrode positive comprenant une première poudre de LCO et une seconde poudre de LCO qui sont toutes deux des poudres monocristallines, la première poudre de LCO ayant une première granulométrie médiane D50A comprise entre 12 µm et 25 µm, telle que déterminée par analyse granulométrique par diffraction laser, la fraction volumique de la seconde poudre de LCO par rapport au volume total du matériau actif d'électrode positive étant comprise entre 10 % et 40 %, telle que déterminée par analyse granulométrique par diffraction laser.