Method of modifying a lithium-based oxide comprising at least one transition metal, positive electrode comprising this oxide, and lithium secondary battery
AssigneeCommissariat a l'Energie Atomique
InventorsSéverine Jouanneau, Frédéric Le Cras, Carole Bourbon
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Abstract
The present invention relates to a method of chemically modifying a lithium-based oxide comprising at least one transition metal, which comprises, in succession: a step of bringing said oxide into contact with an aqueous solution comprising phosphate ions; a step of separating said oxide from the aqueous solution; and a step of drying said oxide. Use of the modified lithium transition metal oxide as active positive electrode material for a lithium secondary battery.
Claims11
Method of chemically modifying a lithium-based oxide comprising at least one transition metal which is in the form of a powder, which comprises, in succession:
- a step of bringing said oxide into contact with an aqueous solution comprising phosphate ions;
- a step of separating said oxide from the aqueous solution;
- and
- a step of drying said oxide,
- wherein the lithium-based oxide thus obtained includes —PO4 groups linked to the transition metal atoms of the lithium-based oxide.
Dependencies are inferred from the claim text.