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. 07, 2014
Filed:
Oct. 19, 2010
Jens Paulsen, Daejeon, KR;
Randy DE Palma, Maasmechelen, BE;
Heonpyo Hong, BeakSeokDong, KR;
Kyubo Kim, Jangan-Gu, KR;
Jens Paulsen, Daejeon, KR;
Randy De Palma, Maasmechelen, BE;
HeonPyo Hong, BeakSeokDong, KR;
KyuBo Kim, Jangan-Gu, KR;
Umicore, Brussels, BE;
Abstract
A lithium transition metal oxide powder for use in a rechargeable battery is disclosed, where the surface of the primary particles of said powder is coated with a LiF layer, where this layer consists of a reaction product of a fluorine-containing polymer and the primary particle surface. The lithium of the LiF originates from the primary particles surface. Examples of the fluorine-containing polymer are either one of PVDF, PVDF-HFP or PTFE. Examples of the lithium transition metal oxide are either one of —LiCoMeO, wherein M is either one of both of Mg and Ti, with e<0.02 and d+e=1; —Li+M'OMSwith −0.03<a<0.06, b<0.02, 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; Mconsisting of either one or more elements of the group Ca, Sr, Y, La, Ce and Zr, with 0≦k≦0.1 in wt %; and 0<m<0.6, m being expressed in mol %; and —LiNiCOM″OA, with 0.9<a′<1.1, 0.5≦x≦0.9, 0<y≦0.4, 0<z≦0.35, e<0.02, 0≦f≦0.05 and 0.9<(x+y+z+f)<1.1; M″ consisting of either one or more elements from the group Al, Mg, and Ti; A consisting of either one or both of S and C.