A kind of preparation method of positive electrode of zinc-nickel battery with high specific energy
A zinc-nickel battery and energy technology, which is applied to nickel batteries, battery electrodes, alkaline battery electrodes, etc., can solve the problems of uneven current distribution, low utilization rate of active materials, and loose bonding, and improve the charging acceptance capacity. , The effect of reducing softening and falling off and reducing internal resistance
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Embodiment 1
[0036] A method for preparing a positive electrode of a high specific energy zinc-nickel battery, comprising the following steps:
[0037] a) Mix raw material A with thickener to prepare slurry A. Raw material A is composed of active material and conductive agent; the thickener is methyl cellulose, and the active material is Ni(OH) 2 , the conductive agent is polyacetylene; the weight ratio of the conductive agent to the active material is 0.8:100, and the amount of the thickener added is 0.5wt% of the sum of the weight of the conductive agent and the active material;
[0038] b) NiCl 2 Dissolve in water to produce 0.1mol / L NiCl 2 solution, stirred at 600rpm for 8 minutes, added slurry A and NiCl 2 Solution weight 0.2wt% naphthalenesulfonic acid formaldehyde condensate, continue to stir 5 minutes with the rotating speed of 800rpm, make slurry B; Slurry A and NiCl 2 The weight ratio of the solution is 2:1;
[0039] c) Add polytetrafluoroethylene to slurry B, stir at 40°C fo...
Embodiment 2
[0043] A method for preparing a positive electrode of a high specific energy zinc-nickel battery, comprising the following steps:
[0044] a) Mix raw material A with thickener to prepare slurry A. Raw material A is composed of active material and conductive agent; the thickener is hydroxypropyl methylcellulose, and the active material is Ni(OH) 2 , the conductive agent is polythiophene; the weight ratio of the conductive agent to the active material is 0.8:85, and the amount of the thickener added is 0.5wt% of the sum of the weight of the conductive agent and the active material;
[0045] b) NiCl 2Dissolve in water to produce 0.1mol / L NiCl 2 solution, stirred at 600rpm for 3 minutes, added slurry A and NiCl 2 Solution weight 0.25wt% naphthalenesulfonic acid formaldehyde condensate, continue to stir 5 minutes with the rotating speed of 600rpm, make slurry B; Slurry A and NiCl 2 The weight ratio of the solution is 2:1.2;
[0046] c) Add polytetrafluoroethylene to slurry B, s...
Embodiment 3
[0050] A method for preparing a positive electrode of a high specific energy zinc-nickel battery, comprising the following steps:
[0051] a) Mix raw material A with thickener to prepare slurry A. Raw material A is composed of active material and conductive agent; the thickener is sodium carboxymethyl cellulose, and the active material is Ni(OH) 2 Composite material, the conductive agent is polypyrrole; the weight ratio of the conductive agent to the active material is 2:150, and the addition amount of the thickener is 1.2wt% of the sum of the weight of the conductive agent and the active material;
[0052] b) NiCl 2 Dissolve in water to produce 1mol / L NiCl 2 solution, stirred at 800rpm for 10 minutes, added slurry A and NiCl 2 Solution weight 0.5wt% naphthalenesulfonic acid formaldehyde condensate, continue to stir with the rotating speed of 700rpm 15 minutes, make slurry B; Slurry A and NiCl 2 The weight ratio of the solution is 2:1.3;
[0053] c) Add polytetrafluoroethy...
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