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US 9,287,552 B2Granted
Reintroduction of lithium into recycled battery materials
OwnerSteven E. Sloopinventor
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Abstract
Methods for making a recycled or refurbished electrode material for an energy-storage device are provided. One example method comprises harvesting a lithium-deficient electrode material from a recycling or waste stream, and replenishing at least some lithium in the lithium-deficient electrode material. A second example method comprises breeching an enclosure of a cell of an energy storage device, replenishing at least some lithium in a lithium-deficient electrode material of the cell, and sealing the enclosure of the cell.
Claims8
A method for making a recycled electrode material for an energy-storage device, the method comprising:
- harvesting a lithium-deficient electrode material from a recycling or waste stream, the lithium-deficient electrode material comprising lithium iron phosphate;
- and
- replenishing at least some lithium in the lithium-deficient electrode material by
- suspending the lithium iron phosphate in a non-aqueous solution comprising lithium iodide, and
- reacting the lithium iron phosphate with the lithium iodide.
2 more elements
Dependencies are inferred from the claim text.