PROCESS FOR MAKING AN ELECTRODE ACTIVE MATERIAL

PROCESS FOR MAKING AN ELECTRODE ACTIVE MATERIAL

Process for making an electrode active material according to general formula Li1+xTM1−xO2, wherein TM is a combination of Ni and Co and Zr and at least one metal selected from Mn and Al, and, optionally, at least one of Mg, Ti, and W, wherein GC at least 60 mole-% is Ni, referring to the sum of Ni,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LEE, Robert Matthew, SIOSS, James A, ERK, Christoph, HARTMANN, Pascal
Format: Patent
Sprache:eng
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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Zusammenfassung:Process for making an electrode active material according to general formula Li1+xTM1−xO2, wherein TM is a combination of Ni and Co and Zr and at least one metal selected from Mn and Al, and, optionally, at least one of Mg, Ti, and W, wherein GC at least 60 mole-% is Ni, referring to the sum of Ni, Co and, if applicable, Mn and Al, and x is in the range of from zero to 0.2, said process comprising the following steps: (a) mixing (A) a mixed oxide or oxyhydroxide of Ni, Co and, if applicable, Mn, (B) at least one lithium compound selected from lithium hydroxide, lithium oxide and lithium carbonate, and (C) at least one oxide or hydroxide or oxyhydroxide of Zr with an average diameter D50 in the range of from 1 to 7 μm, and in compounds (C) that are selected from oxides of Zr, their crystallite size is in the range of from 5 to 20 nm and (b) Subjecting said mixture to heat treatment at a temperature in the range of from 700 to 1000° C.