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:
Jan. 01, 2013
Filed:
Aug. 03, 2009
Jens Martin Paulsen, Cheonan, KR;
Thomas Lau, Edmonton, CA;
Heonpyo Hong, Cheonan, KR;
Jihye Kim, Cheonan, KR;
Jens Martin Paulsen, Cheonan, KR;
Thomas Lau, Edmonton, CA;
HeonPyo Hong, Cheonan, KR;
JiHye Kim, Cheonan, KR;
Umicore, Brussels, BE;
Abstract
A powderous lithium transition metal oxide having a layered crystal structure LiMOM'Swith −0.03<a<0.06, b≅0, 0≦m≦0.6, m being expressed in mol %, M being a transition metal compound, consisting of at least 95% of either one or more elements of the group Ni, Mn, Co and Ti; M′ being present on the surface of the powderous oxide, and consisting of either one or more elements of the group Ca, Sr, Y, La, Ce and Zr, wherein: either k=0 and M=NiMnCO, with 0<c<1, and 0<d<1; or 0.015<k<0.15, k being expressed in wt % of said lithium transition metal oxide; characterized in that for said powderous oxide, the X-ray diffraction peak at 44.5±0.3 degree, having as index 104, measured with K alpha radiation, has a FWHM value of ≦0.1 degree. By optimizing the sintering temperature of the metal oxide the FWHM value can be minimized.