The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2022
Filed:
Sep. 14, 2020
Umicore, Brussels, BE;
Umicore Korea Ltd., Chungnam, KR;
Maxime Blangero, Cheonan, KR;
Da-In Choi, Cheonan, KR;
WooRam Cho, Gyeonggi-do, KR;
JiHye Kim, Dujeong-dong, KR;
UMICORE, Brussels, BE;
UMICORE KOREA, LTD., Chungnam, KR;
Abstract
A powderous positive electrode material for a lithium secondary battery has the general formula Li[NiMM'M″]O. M is one or more elements of the group Mn, Zr and Ti. M′ is one or more elements of the group Al, B and Co. M″ is a dopant different from M and M′, and x, a, b and c are expressed in mol with −0.02≤x≤0.02, 0≤c≤0.05, 0.10≤(a+b)≤0.65 and 0≤z≤0.05. The material has an unconstrained cumulative volume particle size distribution value (Γ(D10)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (Γ(D10)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (Γ(D10)). When Γ(D10) is compared to Γ(D10), the relative increase in value is less than 100%. When Γ(D10) is compared to Γ(D10), the relative increase in value is less than 120%.