Method of preparing lithium metal phosphate cathode materials
AssigneeRivian IP Holdings, LLC
InventorsMajid Talebiesfandarani, Soo Kim, Ki Tae Park
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Abstract
A process of preparing a lithium metal phosphate includes contacting a water-soluble metal precursor, a water-insoluble metal precursor, and a phosphate precursor in an acidic aqueous medium; to form a reaction mixture; precipitating from the reaction mixture a metal phosphate; collecting the metal phosphate; combining the metal phosphate with a lithium precursor; and calcining the combined metal phosphate and lithium precursor at elevated temperature to form a lithium metal phosphate; wherein a mol ratio of water-soluble metal precursor to water-insoluble metal precursor is from 0.5:99.5 to 99.5:0.5.
Claims20
A process of preparing a lithium metal phosphate, the process comprising:
- contacting a water-soluble metal precursor, a water-insoluble metal precursor, and a phosphate precursor in an acidic aqueous medium to form a reaction mixture;
- precipitating a metal phosphate from the reaction mixture;
- collecting the metal phosphate;
- combining the metal phosphate with a lithium precursor;
- and
- calcining the combined metal phosphate and lithium precursor at elevated temperature to form a lithium metal phosphate;
- wherein a mol ratio of water-soluble metal precursor to water-insoluble metal precursor is from 0.5:99.5 to 99.5:0.5.
Dependencies are inferred from the claim text.