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US 11,973,225 B2Granted
Lithium metal phosphate electrode manufacturing
AssigneeRivian IP Holdings, LLC
InventorsGuoxian Liang, Majid Talebiesfandarani, Cary Michael Hayner, Ki Tae Park, Victor Prajapati
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Abstract
Described are embodiments of a lithium metal phosphate production methods and systems. The systems and methods can include combining lithium extraction from spodumene, lithium recycling from lithium ion battery (“LIB”) black mass, and/or lithium metal phosphate synthesis from metal phosphates.
Claims20
A method comprising:
- recycling lithium ion battery black mass to form a metal phosphate and a solution comprising lithium sulfate, wherein forming the metal phosphate generates a first waste;
- precipitating lithium phosphate from the solution using a phosphate-containing material, wherein precipitating lithium phosphate from the solution using the phosphate-containing material generates a second waste;
- combining the first waste and the second waste for further processing;
- mixing the metal phosphate with the lithium phosphate to form a lithium metal phosphate precursor;
- and
- processing the lithium metal phosphate precursor to form lithium metal phosphate.
3 more elements
A method comprising:
- recycling lithium ion battery black mass to form ferric phosphate, ferrous phosphate, manganous phosphate, manganese phosphate, manganese iron phosphate, or combinations thereof and a first solution comprising lithium sulfate, wherein forming ferric phosphate, ferrous phosphate, manganous phosphate, manganese phosphate, manganese iron phosphate, or combinations thereof generates a first waste;
- precipitating lithium phosphate from the first solution comprising lithium sulfate using a phosphate-containing material, wherein precipitating lithium phosphate from the solution using the phosphate-containing material generates a second waste;
- combining the first waste and the second waste for further processing;
- mixing the ferric phosphate, ferrous phosphate, manganous phosphate, manganese phosphate, manganese iron phosphate, or combinations thereof with the lithium phosphate to form a lithium metal phosphate precursor;
- milling the lithium metal phosphate precursor;
- and
- calcining the lithium metal phosphate precursor to form lithium iron phosphate (LFP), lithium iron manganese phosphate (LMFP), or a combination thereof.
4 more elements
Dependencies are inferred from the claim text.