METHOD FOR RECOVERING POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR

METHOD FOR RECOVERING POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR

A method for recovering a positive electrode active material precursor according to embodiments of the present invention comprises the steps of: preparing a positive electrode active material mixture comprising a lithium composite oxide; separating lithium from the positive electrode active material...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KIM, Myoung Lae, LEE, Hyeon Hui, PARK, Ji Yun
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:A method for recovering a positive electrode active material precursor according to embodiments of the present invention comprises the steps of: preparing a positive electrode active material mixture comprising a lithium composite oxide; separating lithium from the positive electrode active material mixture to form a preliminary transition metal precursor; treating the preliminary transition metal precursor with an acid to form a composite transition metal salt solution; and mixing the composite transition metal salt solution with an acidic extractant and then adding a basic compound thereto to recover a composite transition metal precursor, and thus the extraction rate of transition metals can be improved.