A kind of modified nickel-cobalt-manganese-aluminate lithium anode material and preparation method thereof
A technology of nickel-cobalt-manganese-aluminate, cathode material, which is applied to battery electrodes, structural parts, electrical components, etc., can solve the problem of improving cycle stability, and achieve high-rate cycle performance, increase specific surface area, and simple operation. easy effect
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[0035] 1) Prepare solution A and solution B with a total concentration of 2mol / L respectively, wherein the molar ratio of nickel to nickel, cobalt and manganese in solution A is 9:0.5:0.5, and nickel to nickel, cobalt and manganese in solution B The 5:3:2 of aluminum molar ratio, described nickel salt is nickel sulfate, and cobalt salt is cobalt sulfate, and manganese salt is manganese sulfate, and aluminum salt is aluminum sulfate;
[0036]2) Pump solution B into solution A at a constant speed and mix evenly by stirring. At the same time, add the mixed solution into the reaction kettle through the pump, and simultaneously add the precipitant and complexing agent solutions in parallel. In the reaction kettle, ensure that the pH of the reaction solution is 12.0, the reaction temperature is 40°C, and the stirring speed is 1000r / min. Control the drop rate of solution A and solution B to ensure that the two can be added dropwise at the same time, and stop the alkali solution at the...
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