NI OXYHXDROXYDE CONTAINING ADDITIONAL METALS, PROCESS TO PREPARE IT AND LITHIUM MIXED OXIDE PREPARED BY USING IT AS PRECURSOR

摘要

A cathode active material precursor for a lithium metal oxide is provided. The cathode active material precursor comprises a metal-containing oxyhydroxide. The metal-containing oxyhydroxide comprises nickel and an additional metal. At least 50 mol.% of the nickel of the metal-containing oxyhydroxide has an oxidation state of +3. A method of forming a cathode active material precursor is also provided. The method comprises combining a nickel-containing compound, an additional metal-containing compound, an oxidizing agent, and a solvent to form a solution. The method further comprises exposing the solution to heat at a temperature of from about 30 °C to about 90 °C to form a precipitate comprising the metal-containing oxyhydroxide.