Method for preparing porous carbon spheres by using waste sugar solution and method for preparing electrode sheet by using carbon spheres
A technology for preparing electrodes and porous carbon, which is applied in chemical instruments and methods, hybrid capacitor electrodes, inorganic chemistry, etc., and can solve problems such as environmental pollution and waste of resources
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Embodiment 1
[0028] Example 1 Porous carbon spheres were prepared from waste sugar solution.
[0029] Step 1: Filter the waste sugar solution under reduced pressure to remove insoluble impurities, then mix 30 mL of deionized water and 20 mL of the waste sugar solution after suction filtration, and then perform ultrasonic dispersion for 30 minutes to obtain 50 mL of mixed solution.
[0030] The mixed solution obtained above was poured into a 100 mL polytetrafluoroethylene-lined stainless steel hydrothermal reaction kettle. Put the hydrothermal reaction kettle into the blast drying oven, at 180 o After keeping at the temperature of C for 12 h, it was naturally cooled to room temperature to obtain a columnar gel-like carbon material (dark brown).
[0031] Step 2: Mix the columnar gel-like carbon material with deionized water and ultrasonically disperse it for 30 minutes, then mix it with ethanol and ultrasonically disperse it for 30 minutes, then carry out suction filtration, repeat the abo...
Embodiment 2
[0038] Embodiment 2 is basically the same as Embodiment 1, except that the ultrasonic dispersion time described in step 1 is 20 minutes.
Embodiment 3
[0039] Embodiment 3 is basically the same as Embodiment 1, except that the ultrasonic dispersion time described in step 1 is 40 minutes.
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