A method for regenerating waste lithium nickel cobalt manganate ternary cathode material
A technology of nickel-cobalt-lithium-manganese-manganese oxide and positive electrode materials, which is applied in chemical instruments and methods, solid waste removal, electrical components, etc., and can solve problems such as failure to realize closed-loop circulation of metal components, complex recycling process, and serious secondary pollution , to achieve the effect of promoting leaching efficiency, simple operation and low processing cost
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[0067] Example 1
[0068] (1) Configure a mixed acid solution with a total mixed acid concentration of 0.6M, in which phosphoric acid concentration is 0.2M, and citric acid concentration is 0.4M. Take 100ml into a 250ml flask and adjust the speed to 500r / min. When the solution is heated to 90℃, add 2g LiNi 0.5 Co 0.2 Mn 0.3 O 2 Ternary positive electrode waste, stirred and reacted for 30 minutes, then filtered with suction to obtain Li + , Ni 2+ , Co 2+ , Mn 2+ The solution.
[0069] (2) Take 50ml of the solution obtained in step (1) and add (CH 3 COO) 2 Ni·4H 2 O,(CH 3 COO) 2 Co·4H 2 O and (CH 3 COO) 2 Mn·4H 2 O, adjust Ni 2+ , Co 2+ And Mn 2+ The molar ratio of ions is 5:2:3, and the total metal ion concentration of the solution is 0.4M. At a stirring speed of 600 rpm, the nickel-cobalt-manganese mixed solution was dropped into an appropriate amount of H by a forward feeding method. 2 C 2 O 4 In the solution, its dropping rate is 9mL / min. During the reaction, by adding NH 3 ·H ...
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