Method for the manufacture of cathode materials
AssigneeSylvatex, Inc.
InventorsMelvin Louis Luetkens, Jr., Daniel Teav Sun, Yanying Lu, Andrew Justl
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Abstract
A method of producing a particulate lithium metal oxide cathode material comprising the steps of providing an organic acid, providing a lithium compound, and providing a metal compound. The organic acid, the lithium compound, and the metal compound are mixed to form a mixture. The organic acid is melted to form a liquid organic acid, if the organic acid is provided as a solid. The mixture, including the liquid organic acid, is calcined in an atmosphere containing oxygen to form a lithium metal oxide. The lithium metal oxide is cooled and sized to produce the particulate lithium metal oxide having a predetermined average particle size.
Claims12
A method of producing a particulate lithium metal phosphate Li(M5)PO4, the method comprising:
- providing an apparatus;
- adding a solid organic acid to the apparatus;
- adding a lithium compound Lix1(A) where x1 is 1-3 to the apparatus;
- adding a phosphate-containing compound to the apparatus;
- adding a metal compound (M5)(A)x where x is 1 or 2 to the apparatus;
- mixing the solid organic acid, the lithium compound, the phosphate-containing compound and the metal compound in the apparatus to form a mixture;
- melting the solid organic acid in the apparatus to form a liquid organic acid;
- calcining the mixture, including the liquid organic acid, in an inert gas to yield a lithium metal phosphate;
- cooling the lithium metal phosphate;
- and
- sizing the cooled lithium metal phosphate to produce the particulate lithium metal phosphate having a predetermined average particle size.
Dependencies are inferred from the claim text.