METHOD FOR MAKING PRECURSORS OF CATHODE ACTIVE MATERIALS FOR LITHIUM ION BATTERIES

• Main Authors: FRISCHHUT, Sabine, BEIERLING, Thorsten, RAULS, Matthias, METZGER, Lukas Karl, DUCHARDT, Marc
• Format: Patent
• Language: English
• Published: 24.10.2024
• Subjects: 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

Disclosed herein is a process for making a particulate (oxy)hydroxide of TM, where TM represents metals and includes nickel and at least one metal selected from cobalt and aluminum and manganese. The process includes the steps of:(a) combining an aqueous slurry of metallic nickel and at least one metal selected from cobalt and manganese and aluminum with an oxidant selected from nitrate and peroxide in a reaction vessel under an atmosphere with less than 100 ppm O2, thereby obtaining an aqueous reaction medium with a pH value in the range of from 7.5 to 12 containing particles,(b) removing the particles from step (a) from the liquid by a solid-liquid separation method, and drying the particles, and(c) returning mother liquor obtained in step (b) to the reaction vessel.