A method for synthesize mother liquor of ternary cathode material precursor of lithium ion battery

• Main Authors: CHEN JIANBING, ZHENG SHILIN, WU LIJUE, TANG YIWEI, WEN DINGQIANG, HUANG YAXIANG
• Format: Patent
• Language: Chinese; English
• Published: 22.01.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A method for comprehensively utilizing mother liquor dure synthesis of ternary cathode material precursor of lithium ion battery comprises that following steps of: pas mother liquor of ternary precursor from top to bottom into a rectification column of a stripper ammonia deamination system for deamination, and controlling the deamination residence time of the mother liquor per unit volume to be 0.5-1.0 mmol/L, wherein the deamination residence time of the mother liquor per unit volume of the stripper ammonia deamination system is less than 0.5 mmol/L. 1.0h; A certain amount of ternary precursor waste is added after deamination in the first step, and ozone is introduced at a certain rate, and the mixture is heated and stirred to react with 0.5-2h; Filtering the mother liquor of the ternaryprecursor after the reaction is completed in the step 2 to obtain filtrate and filter residue; 3, put that filter residue obtain in the step 3 into another reaction tank, adding water to mix slurry, adding a certain amount of