US 12,191,486 B2
Method for preparing a positive electrode active material of the lithiated metal oxide type comprising titanium
David Peralta, Grenoble (FR); Carole Bourbon, Grenoble (FR); Jean-François Colin, Grenoble (FR); Nathalie Herlin-Boime, Grenoble (FR); and Jérémie Fondard, Grenoble (FR)
Assigned to COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, Paris (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
Filed by COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, Paris (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
Filed on Sep. 29, 2021, as Appl. No. 17/488,607.
Claims priority of application No. 2009897 (FR), filed on Sep. 29, 2020.
Prior Publication US 2022/0102720 A1, Mar. 31, 2022
Int. Cl. H01M 4/525 (2010.01); C01G 53/00 (2006.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/525 (2013.01) [C01G 53/42 (2013.01); C01G 53/50 (2013.01); C01G 53/54 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); C01P 2002/20 (2013.01); C01P 2002/32 (2013.01); C01P 2002/52 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01)] 14 Claims
 
1. A method for preparing a positive electrode active material for a lithium battery, the positive electrode active material consisting of a lithiated oxide, wherein the lithiated oxide comprises titanium and optionally one or more other metal elements, the method comprising the following successive steps:
a) a step of forming a precipitate comprising titanium and the optional other metal element(s) by contacting a titanium coordination complex which comprises at least one ligand comprising at least two groups establishing coordination bonds with titanium, and, if necessary, at least one salt of the other metal element(s), with a basic aqueous medium;
b) a step of recovering the precipitate thus formed;
c) a step of calcining the precipitate in the presence of a lithium source.