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. 12, 2020
Filed:
Aug. 24, 2016
High tap density lithium positive electrode active material, intermediate and process of preparation
Haldor Topsoe A/s, Kgs. Lyngby, DK;
Jon Fold Von Bülow, Copenhagen, DK;
Søren Dahl, Hillerød, DK;
Jonathan Højberg, Kgs. Lyngby, DK;
Jakob Weiland Høj, Gentofte, DK;
HALDOR TOPSØE A/S, KGS. Lyngby, DK;
Abstract
A lithium positive electrode active material intermediate comprising less than 80 wt % spinel phase and a net chemical composition of LiNiMnOwherein 0.9≤x≤1.1; 0.4≤y≤0.5; and 0.1≤δ; where the lithium positive electrode active material intermediate has been heat treated in a reducing atmosphere at a temperature of from 300° C. to 1200° C. A process for the preparation of a lithium positive electrode active material with high tap density for a high voltage secondary battery where the cathode is fully or partially operated above 4.4 V vs. Li/Li+, comprising the steps of a) heating a precursor in a reducing atmosphere at a temperature of from 300° C. to 1200° C. to obtain a lithium positive electrode active material intermediate; b) heating the product of step a. in a non-reducing atmosphere at a temperature of from 300° C. to 1200° C.