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:
Oct. 02, 2018
Filed:
Feb. 25, 2015
Umicore, Brussels, BE;
Umicore Korea Ltd., Chungnam, KR;
Dae-Hyun Kim, Cheonan, KR;
Jens Paulsen, Daejeon, KR;
Umicore, Brussels, BE;
Umicore Korea, Ltd., Chungnam, KR;
Abstract
A method for preparing a positive electrode material for a rechargeable lithium battery, comprising the steps of: —providing a Li metal (M) oxide electroactive material, —providing an inorganic oxidizing chemical compound, —providing a chemical that is a Li-acceptor, —mixing the Li metal (M) oxide, the oxidizing compound and the Li-acceptor, and —heating the mixture at a temperature between 200 and 800° C. in an oxygen comprising atmosphere. In an embodiment the positive electrode material comprises a Li metal (M) oxide electroactive material, and between 0.15 and 5 wt % of a LiNaS04 secondary phase. The Li metal oxide may have the general formula LiMO, with a'<a and 0.9≤(1+a′)/(1−a)≤1.15, and M=NiM′xCo, with M′=MnAI, 0≤z≤1, 0.1≤y≤0.4 and x+y≤0.5.