Electrode material based on lotus petioles and preparation method thereof
An electrode material and charge stem technology, which is applied in the field of charge stem-based electrode materials and their preparation, can solve the problems of low energy density of capacitors, low specific surface area of carbon materials, poor energy storage effect, etc. The effect of surface area, high specific capacitance
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Embodiment 1
[0031] 1) Put the lotus stalks cut about 3 cm into a 1000 mL beaker filled with deionized water, wash them 3 to 5 times, and then dry them in a blast drying oven at 90 °C for 12 h, and then dry them Put the good lotus stalks in the quartz boat, spread them evenly, put them into the heating tube of the device, raise the temperature to 400°C under the protection of nitrogen and keep it warm for 2 hours, after the reaction is completed, cool to room temperature under the protection of nitrogen , take out the sample to obtain a three-dimensional honeycomb-like carbon material;
[0032] 2) Grind the three-dimensional honeycomb-like carbon material obtained in step 1) into powder, then add KOH and mix evenly, so that the mass ratio of the three-dimensional honeycomb-like carbon material to KOH is 1:4, and then heat up to 900 °C under nitrogen protection ℃ and kept warm for 1 h, after the reaction was completed, cooled to room temperature, added a large amount of deionized water, fil...
Embodiment 2
[0035]1) Put the lotus stalks cut about 3 cm into a 1000 mL beaker filled with deionized water, wash them for 3 to 5 times, and then dry them in a blast drying oven at 80 °C for 12 h, and then dry them Put the good lotus stems in the quartz boat, spread them evenly, put them into the heating tube of the device, raise the temperature to 500°C under the protection of nitrogen and keep it warm for 1 hour, after the reaction is completed, cool to room temperature under the protection of nitrogen , take out the sample to obtain a three-dimensional honeycomb-like carbon material;
[0036] 2) Grind the three-dimensional honeycomb-like carbon material obtained in step 1) into powder, then add KOH and mix evenly, so that the mass ratio of the three-dimensional honeycomb-like carbon material to KOH is 1:5, and then heat up to 800 °C under nitrogen protection ℃ and keep warm for 2 h, after the reaction is finished, cool to room temperature, add a large amount of deionized water, filter t...
Embodiment 3
[0039] 1) Put the lotus stalks cut about 3 cm into a 1000 mL beaker filled with deionized water, wash them 3 to 5 times, and then dry them in a blast drying oven at 100 °C for 12 h, and then dry them Put the good lotus stems in the quartz boat, spread them evenly, put them into the heating tube of the device, raise the temperature to 500°C under the protection of nitrogen and keep it warm for 1 hour, after the reaction is completed, cool to room temperature under the protection of nitrogen , take out the sample to obtain a three-dimensional honeycomb-like carbon material;
[0040] 2) Grind the three-dimensional honeycomb-like carbon material obtained in step 1) into powder, then add KOH and mix evenly, so that the mass ratio of the three-dimensional honeycomb-like carbon material to KOH is 1:6, and then heat up to 900 °C under nitrogen protection ℃ and keep warm for 1 h, after the reaction is finished, cool to room temperature, add a large amount of deionized water, filter thr...
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Abstract
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