Method used for preparing nickel-based layer structural ternary cathode material using microwave
A technology of ternary materials and positive electrode materials, which is applied in the direction of structural parts, electrical components, battery electrodes, etc., to achieve the effects of low energy consumption, shortened process flow, and reduced energy consumption
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Embodiment 1
[0026] The preparation of step 1 feed liquid:
[0027] (1) Add 0.02molNiSO 4 ·6H 2 O, 0.012molCoSO 4 ·7H 2 O, 0.008molMnSO 4 ·H 2 O was dissolved in 140ml of a mixture of deionized water and isopropanol, wherein isopropanol accounted for 10% of the volume of the mixture. Stir at room temperature and normal pressure until completely dissolved, and the molar ratio of Ni:Co:Mn after dissolution is 5:3:2.
[0028] (2) Add 0.044mol of (NH 4 ) 2 C 2 o 4 ·H 2 Dissolve O in 60 ml of a mixture of deionized water and isopropanol, in which isopropanol accounts for 10% of the volume of the mixture, stir at 60°C under normal pressure until it is completely dissolved, and hold the ammonium oxalate solution Keep the container tightly closed to reduce the evaporation of water.
[0029] Step 2 Co-precipitation reaction: After the above-mentioned heated ammonium oxalate solution is completely dissolved, it is quickly poured into the ternary mixture solution, heated by microwave at 6...
Embodiment 2
[0033] (1) Add 0.03molNi(NO 3 ) 2 ·6H 2 O, 0.018molCo(NO 3 ) 2 ·6H 2 O, 0.024molMn(NO 3 ) 2 (50% solution) was dissolved in a mixture of 120ml of deionized water and absolute ethanol, wherein absolute ethanol accounted for 20% of the volume of the mixture. Stir at room temperature until completely dissolved, and the molar ratio of Ni:Co:Mn after dissolution is 5:3:2.
[0034] (2) Add 0.066mol of Na 2 C 2 o 4 Dissolve in a mixture of 180 ml of deionized water and absolute ethanol, of which absolute ethanol accounts for 20% of the volume of the mixture, heat and stir at 70°C until completely dissolved, and seal the container holding the sodium oxalate solution to reduce water evaporation quantity.
[0035] (3) After the above-mentioned heated sodium oxalate solution is completely dissolved, quickly pour the ternary mixture into the sodium oxalate solution, heat with microwave at 75°C and stir for 20 minutes.
[0036] (4) After aging the above-mentioned co-precipitat...
Embodiment 3
[0039] (1) Add 0.05molNiCl 2 ·6H 2 O, 0.03mol CoCl 2 ·6H 2 O, 0.02molMnCl 2 4H 2 O was dissolved in a mixture of 250ml of deionized water and ethylene glycol, wherein ethylene glycol accounted for 15% of the volume of the mixture. Stir at room temperature until completely dissolved, and the molar ratio of Ni:Co:Mn after dissolution is 5:3:2.
[0040] (2) Add 0.11mol of K 2 C 2 o 4 ·H 2 Dissolve O in a mixture of 250 ml deionized water and ethylene glycol, where ethylene glycol accounts for 15% of the volume of the mixture, stir at 60°C until completely dissolved, and seal the container holding the potassium oxalate solution to reduce water evaporation quantity.
[0041] (3) After the above-mentioned heated potassium oxalate solution is completely dissolved, quickly pour it into the ternary mixture, heat to 90°C with microwave and stir for 10 minutes.
[0042] (4) After aging the above-mentioned co-precipitation reaction mixture for 10 minutes, separate the solid and...
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