RECYCLING METHOD FOR WASTE LITHIUM ION SECONDARY BATTERIES AND ELECTRODE RAW MATERIALS OBTAINED THEREFROM
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United States of America
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Feb 20, 2025
app pub date -
Mar 5, 2024
filing date -
Mar 5, 2024
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Abstract
A recycling method of a waste lithium ion secondary battery may include (a) charging a waste lithium ion secondary battery into a pyrolysis furnace, (b) increasing the internal temperature of the pyrolysis furnace to induce self-heating of the waste lithium ion secondary battery, (c) maintaining a self-heating reaction of the waste lithium ion secondary battery, (d) discharging a first powder formed after completing the self-heating reaction of the waste lithium ion secondary battery, and (e) injecting the first powder into water, dissolving a lithium component included in the first powder, and separating and recovering a lithium aqueous solution, a precipitate settled in the lithium aqueous solution, and a floating material on the surface of the lithium aqueous solution, separately.
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