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:
Jul. 08, 2025
Filed:
Sep. 11, 2020
Umicore, Brussels, BE;
Dae-Hyun Kim, Chungcheongnam-do, KR;
Jens Paulsen, Chungcheongnam-do, KR;
Kasper Lambrighs, Brussels, BE;
Randy De Palma, Brussels, BE;
Liang Zhu, Brussels, BE;
UMICORE, Brussels, BE;
Abstract
The present invention provides a process is presented for preparing a positive electrode active material for rechargeable lithium ion batteries. The process comprises a sintering step having a short sintering time. This improves the production throughput. More particularly, the process applies to positive electrode active material powders having a general formula Li(NiMnCoMe)O, wherein Me comprises at least one element of the group consisting of Al, Mg, Ti, Zr, W, Nb, B, and Sr, with −0.1≤a≤0.1, 0.33≤x≤0.95, 0≤y≤0.35, 0<z≤0.35, 0≤c≤0.05, and x+y+z+c=1. The sintering step is performed for a predefined sintering time t, expressed in hours, and at a predefined temperature T, expressed in ° C., such that 0.3≤t≤6.0, and 1140+50 Log(6/t)−580 x≤T≤1245+50 Log(6/t)−580 x.