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:
Jun. 17, 2014
Filed:
Aug. 15, 2011
Stephane Levasseur, Brussels, BE;
Philippe Carlach, Antwerp, BE;
Randy DE Palma, Maasmechelen, BE;
Michèle Van Thournout, Isières, BE;
Stephane Levasseur, Brussels, BE;
Philippe Carlach, Antwerp, BE;
Randy De Palma, Maasmechelen, BE;
Michèle Van Thournout, Isières, BE;
Umicore, Brussels, BE;
Abstract
The invention relates to a LiNiCoMnM'Ocomposite oxide for use as a cathode material in a rechargeable battery, with a non-homogenous Ni/M′ ratio in the particles, allowing excellent power and safety properties when used as positive electrode material in Li battery. More particularly, in the formula 0.9<a<1.1, 0.3≦x≦0.9, 0<y≦0.4, 0<y′≦0.4, 0<z≦0.35, e<0.02, 0≦f≦0.05 and 0.9<(x+y+y′+z+f)<1.1; M′ consists of either one or more elements from the group Al, Mg, Ti, Cr, V, Fe, Mn and Ga; N consists of either one or more elements from the group F, Cl, S, Zr, Ba, Y, Ca, B, Sn, Sb, Na and Zn. The powder has a particle size distribution defining a D10, D50 and D90; and the x and z parameters varying with the particles size of the powder, and is characterized in that either one or both of:1−2≧0.005and2−1≧0.005;x1 and z1 being the parameters corresponding to particles having a particle size D90; and x2 and z2 being the parameters corresponding to particles having a particle size D10.