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. 05, 2020
Filed:
Aug. 25, 2016
Umicore, Brussels, BE;
Umicore Korea Ltd., Chungnam, KR;
Maxime Blangero, Cheonan, KR;
DongGun Park, Seoul, KR;
Jens Paulsen, Daejeon, KR;
Jing Zhang, Cheonan, KR;
UMICORE, Brussels, BE;
UMICORE KOREA, LTD., Chungnam, KR;
Abstract
A crystalline precursor compound is described for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula Li((Ni(NiMn)M')A)O, wherein x+y+z=1, 0<x≤0.2, 0.55<z≤0.90, M′ is either one or both of Co and Al, A is a dopant, 0≤k≤0.1, and 0.05≤a≤0.40, wherein the precursor an integrated intensity ratio I003/I104<1, wherein I003 and I104 are the peak intensities of the Bragg peaks (003) and (104) of the XRD pattern of the crystalline precursor compound. Also a method is described for manufacturing a positive electrode material having a general formula LiMO, with M=(Ni(NiMn)M′)A), wherein x+y+z=1, 0<x≤0.2, 0.55<z≤0.90, M′ is either one or both of Co and Al, A is a dopant, 0≤k≤0.1 and 0.01<a′<0.10 by sintering the crystalline precursor compound in an oxidizing CO-free atmosphere at a temperature T between 750 and 950° C., for a time t between 6 and 36 hrs.