Thick-layer three-dimensional vertical hierarchical multi-channel graphitized activated wood-source carbon electrode and its preparation method
A technology of carbon electrode and multi-channel, which is applied in the field of graphitized active wood source carbon electrode and its preparation in thick layer three-dimensional vertical hierarchical multi-channel, which can solve the problems of high degree of non-graphitization, low specific capacitance and poor conductivity of electrode materials , to achieve the effect of increasing the degree of graphitization and specific surface area, increasing the specific surface area, and improving the capacitance performance
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Embodiment 1
[0036] 1. Preparation of thick-layer wood-derived carbon electrodes
[0037]Clean the wood with a size of 0.8cm×0.8cm×2.0cm with ethanol and deionized water, dry it, raise the temperature to 900℃ at 5℃ / min in a nitrogen atmosphere, carbonize at a constant temperature for 3 hours, and then cool down to room temperature naturally. Ultrasonic cleaning with ethanol and deionized water and drying in an oven at 100 °C for 1 hour yielded a thick-layer wood-derived carbon electrode (TWC).
[0038] 2. Vacuum-assisted modification
[0039] Place the TWC obtained in step 1 in 50mL mixed acid solution, the mixed acid solution is composed of nitric acid, sulfuric acid and deionized water, wherein the mass fraction of nitric acid is 10%, the mass fraction of sulfuric acid is 50%, in a vacuum environment at 60°C After soaking for 30 minutes, the product was sequentially washed with ethanol and deionized water until the pH was neutral, and then dried in an oven at 100°C for 1 hour to obtain ...
Embodiment 2
[0047] 1. Preparation of thick-layer wood-derived carbon electrodes
[0048] This step is the same as in Example 1.
[0049] 2. Vacuum-assisted modification
[0050] Place the TWC obtained in step 1 in 50mL mixed acid solution, the mixed acid solution is composed of nitric acid, sulfuric acid and deionized water, wherein the mass fraction of nitric acid is 5%, the mass fraction of sulfuric acid is 25%, in a vacuum environment at 60°C After soaking for 10 minutes, the product was sequentially washed with ethanol and deionized water until the pH was neutral, and dried in an oven at 100°C for 1 hour to obtain the modified TWC.
[0051] 3. Impregnated catalytic activator
[0052] The modified TWC obtained in step 2 was impregnated in 50mL 0.05mol / L Fe(NO 3 ) 3 In aqueous solution, reflux at 80°C for 6 hours to obtain impregnated Fe(NO 3 ) 3 Modified TWC.
[0053] 4. One-step preparation of thick-layer three-dimensional vertically hierarchical porous graphitized active wood-...
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