PROCESS FOR MAKING A PARTIALLY COATED ELECTRODE ACTIVE MATERIAL, AND ELECTRODE ACTIVE MATERIAL

PROCESS FOR MAKING A PARTIALLY COATED ELECTRODE ACTIVE MATERIAL, AND ELECTRODE ACTIVE MATERIAL

A process for making a partially coated electrode active material may involve: (a) providing an electrode active material of the formula Li1+xTM1−xO2, wherein TM is a combination of Ni, Co and, optionally, Mn, and, optionally, at least one metal selected from Al, Ti, Mo, W, and Zr, and x is in the r...

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Bibliographische Detailangaben
Hauptverfasser: HAAG, JACOB, AHLF, MARAIKE, SOMMER, HEINO
Format: Patent
Sprache:eng ; pol
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Zusammenfassung:A process for making a partially coated electrode active material may involve: (a) providing an electrode active material of the formula Li1+xTM1−xO2, wherein TM is a combination of Ni, Co and, optionally, Mn, and, optionally, at least one metal selected from Al, Ti, Mo, W, and Zr, and x is in the range of from zero to 0.2, wherein at least 60 mole-% of the transition metal of TM is Ni, and wherein the electrode active material has a residual moisture content in the range of from 50 to 1,000 ppm; (b) treating the electrode active material with a metal alkoxide or metal halide or metal amide or alkyl metal compound; (c) treating the material obtained in (b) with moisture; and (d) repeating the sequence of (b) and (c) twice to 4 times, wherein, in the last sequence of (b) and (c), moisture is at least partially substituted by ozone.