Method for preparing cathode active material of zinc-nickel battery
A negative electrode active material, zinc-nickel battery technology, applied in the direction of electrode manufacturing, etc., can solve the problems of reduced battery cycle life, uneven distribution of calcium zincate, etc., and achieve the effect of short synthesis time and high yield
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Embodiment 1
[0023] 1. Preparation of negative electrode active material: Take 2 moles of NaOH to make a solution of 500ml, heat the NaOH solution to 80°C and keep it at a constant temperature, and take 0.3 moles of CaCl respectively 2 and 0.6 molar ZnCl 2 Prepare 180ml of each solution, add 30ml of ZnCl dropwise 2 solution into the NaOH solution, constantly stirring at a constant temperature until the NaOH solution will ZnCl 2 The precipitate produced by the reaction with NaOH was completely dissolved. At this time the CaCl 2 solution and the remaining ZnCl 2 The solution was mixed evenly and continued to be added dropwise to the NaOH solution. When CaCl 2 and ZnCl 2 After all the mixed solution of the mixture was added to the stirring NaOH solution, the stirring was continued at a constant temperature for 0.5 hours. After the solution was cooled, it was suction filtered, washed and the product was dried at a temperature of 90°C.
[0024] 2. Product testing:
[0025] The XRD diffr...
Embodiment 2
[0028] Take 2 moles of NaOH to prepare 500ml of a solution, keep a constant temperature of 80°C, add 0.1 moles of ZnO to the NaOH solution, and keep stirring at a constant temperature until the ZnO is completely dissolved. Another 0.5 mole ZnCl 2 Prepare 400ml solution, then take 0.3 mole CaCl 2 Add ZnCl 2 The solution is made into a mixed solution, and in the process of stirring, the CaCl 2 and ZnCl 2 The mixed solution is added to the above NaOH solution, when CaCl 2 and ZnCl 2 After all the mixed solution of the mixture was added into the stirring NaOH solution, the stirring was continued at a constant temperature for 0.5 hours, and after the suspension was cooled, it was suction filtered, washed and dried at a temperature of 60°C.
Embodiment 3
[0030] Take 1 mole of NaOH and 1 mole of KOH to make 500ml mixed alkali solution, keep the mixed alkali solution at a constant temperature of 80°C, and take 0.3 moles of CaCl respectively 2 and 0.6 molar ZnCl 2 Prepare 180ml of each solution, add 30ml of ZnCl dropwise 2 solution into the mixed alkali solution, constantly stirring at a constant temperature until the mixed alkali solution will ZnCl 2 The precipitate produced by the reaction with the mixed base is completely dissolved. At this time the CaCl 2 solution and the remaining ZnCl 2 The solution was mixed evenly, and continued to be added dropwise to the mixed alkali solution. When CaCl 2 and ZnCl 2 After adding all the mixed solution of the mixture into the stirring mixed alkali solution, continue to stir at a constant temperature for 0.5 hours. After the suspension is cooled, it is suction-filtered, washed and dried at a temperature of 70°C.
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