Preparation method of supercapacitor material
A technology for supercapacitors and electrode materials, applied in the field of materials, can solve the problems of low specific capacitance, high production cost, complex production process, etc., and achieve the effects of simple and easy preparation process, low cost and strong controllability
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Embodiment 1
[0024] 0.042g of polyphosphoric acid was added to 19g of N-methylpyrrolidone, stirred for 10 hours, then 2g of polyamide (PAI) was added thereto, sonicated or heated to aid dissolution, and finally stirred for 24 hours.
[0025] Pour the uniform mixed solution into a watch glass, and place it under the conditions of constant temperature 25°C and constant humidity 30% for 36 hours, the solvent evaporates completely, and self-assembly is completed, and H 3 PO 4 / PAI composite porous polymer.
[0026] the H 3 PO 4 / PAI composite porous polymer was pre-oxidized at 240°C for 5 hours, with a heating rate of 10°C / min and a cooling rate of 1°C / min.
[0027] Put the pre-oxidized product in a carbonization furnace, under nitrogen atmosphere, heat up at 20°C / min to 300°C for 10 hours, then heat at 20°C / min to 600°C for 10 hours, and finally cool at 10°C / min to room temperature, the porous carbon material is obtained.
[0028] Mix 90wt% porous carbon material and 5wt% conductive carb...
Embodiment 2
[0030] 1.222 g of phosphoric acid with a mass concentration of 85% was added to 19 g of N,N-dimethylformamide, stirred for 10 hours, then 2 g of polyacrylonitrile (PAN) was added therein, sonicated or heated to aid dissolution, and finally stirred for 24 hours.
[0031] Pour the uniform mixed solution into a watch glass, and place it under the conditions of constant temperature 35°C and constant humidity 60% for 24 hours, the solvent evaporates completely, and self-assembly is completed, and H 3 PO 4 / PAN composite porous polymer.
[0032] the H 3 PO 4 / PAN composite porous polymer was pre-oxidized at 270°C for 2 hours, the heating rate was 3°C / min, and the cooling rate was 5°C / min.
[0033] Put the pre-oxidized product in a carbonization furnace, under a nitrogen atmosphere, raise the temperature at 5°C / min to 400°C and keep it for 2 hours, then raise the temperature at 5°C / min to 800°C and keep it for 5 hours, and finally cool it at 10°C / min to room temperature, the poro...
Embodiment 3
[0036] Add 1.826 g of phosphorous acid to 19 g of N,N-dimethylacetamide, stir for 10 hours, then add 2 polyimides (PII), ultrasonically or heat to aid dissolution, and finally stir for 24 hours.
[0037] Pour the uniform mixed solution into a watch glass, and place it under the conditions of constant temperature 60°C and constant humidity 40% for 6 hours, the solvent evaporates completely, and the self-assembly is completed to obtain H 3 PO 4 / PII composite porous polymer.
[0038] the H 3 PO 4 / PII composite porous polymer was pre-oxidized at 270°C for 2 hours, with a heating rate of 1°C / min and a cooling rate of 1°C / min.
[0039] Put the pre-oxidized product in a carbonization furnace, under a nitrogen atmosphere, raise the temperature at 1°C / min to 500°C and keep it for 1 hour, then raise the temperature at 1°C / min to 1000°C and keep it for 0.5 hours, and finally cool it at 20°C / min to room temperature, the porous carbon material is obtained.
[0040] 95 wt% of the por...
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