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. 23, 2007
Filed:
Oct. 08, 2004
Christian Jordy, St Louis de Montferrand, FR;
Claudette Audry, Bruges, FR;
Jean-pierre Boeuve, Montussan, FR;
Philippe Biensan, Carignan de Bordeaux, FR;
Andre Lecerf, Rennes, FR;
Christian Jordy, St Louis de Montferrand, FR;
Claudette Audry, Bruges, FR;
Jean-Pierre Boeuve, Montussan, FR;
Philippe Biensan, Carignan de Bordeaux, FR;
Andre Lecerf, Rennes, FR;
SAFT, Bagnolet, FR;
Abstract
An electrochemically active material resulting from substituting a portion of the nickel in a single-phase composite oxide of nickel and lithium of the LiNiOtype, characterized in that the active material satisfies the formula:Li(MLiMM)Oin which: 0.02<a≦0.25; 0≦b<0.30; 0≦c<0.30; (a+b+c)<0.50; Mis at least one element selected from Al, B, and Ga; Mis at least one element selected from Mg and Zn; andM=NiCoMnMin which Mis at least one element selected from Fe, Cu, Ti, Zr, V, Ga, and Si; and 0≦x<0.70; 0.10≦y<0.55; 0≦z<0.30; and 0.20<(1-x-y-z); b+c+z>0; and in that said active material, regardless of its state of charge, satisfies the relationship:0.40<R<0.90, where:=(1-a-b-c)*[3-[(n/n)/(4-2-3)]*(2--2)]in which: nis the lithium content expressed in moles; nis the sum of the contents of Ni, Mn, Co, and Mexpressed in moles; and dis the overall degree of oxidation of M.