Production method of graphene super capacitor electrode material
A technology for supercapacitors and electrode materials, applied in the field of materials science, can solve problems such as stacking and poor conductivity, and achieve the effects of reducing aggregation and stacking, good conductivity, and increasing specific surface area
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Embodiment 1
[0031] 1. Dissolve the graphene oxide synthesized by the improved Hummers method in 30mL deionized water / isopropanol (alcohol volume ratio=33.4%), and ultrasonically disperse evenly to obtain a graphene oxide dispersion of 1.5mg / mL.
[0032] 2. Add aniline dropwise to the solution in step (1), and disperse evenly by ultrasonic, the concentration of aniline in the solution is 0.25M.
[0033] 3. Place the solution obtained in step (2) under the condition of stirring in an ice-water bath, add concentrated phosphoric acid and concentrated hydrochloric acid, the acid concentrations in the solution are 0.30M and 0.16M respectively, control the pH of the solution to <2, and stir for 15 minutes.
[0034] 4. Add ammonium persulfate to the solution obtained in step (3), the initial concentration of ammonium persulfate in the solution is 0.063M, and then continue stirring for 6 hours under an ice-water bath to obtain a dark green suspension. The resulting suspension was transferred into ...
Embodiment 2
[0039] 1. Dissolve the graphene oxide synthesized by the improved Hummers method in 30 mL of deionized water, and disperse evenly by ultrasonic to obtain a 1.5 mg / mL graphene oxide dispersion.
[0040] 2. Add aniline dropwise to the solution in step (1), and disperse evenly by ultrasonic, the concentration of aniline in the solution is 0.08M.
[0041] 3. Place the solution obtained in step (2) under the condition of stirring in an ice-water bath, add concentrated phosphoric acid and concentrated hydrochloric acid, the acid concentrations in the solution are 0.20M and 0.16M respectively, control the pH of the solution <2, and stir for 15 minutes.
[0042] 4. Add ammonium persulfate to the solution obtained in step (3), the initial concentration of ammonium persulfate in the solution is 0.021M, and then continue stirring for 6 hours in an ice-water bath to obtain a dark green suspension. The resulting suspension was transferred into an 80mL reactor and reacted at 100°C for 5 hou...
Embodiment 3
[0046]1. Get the graphene oxide synthesized by the improved Hummers method, dissolve it in 30mL deionized water / ethylene glycol (alcohol volume ratio=33.4%), and ultrasonically disperse evenly to obtain a 1.5mg / mL graphene oxide dispersion.
[0047] 2. Add aniline dropwise to the solution in step (1), and disperse evenly by ultrasonic, the concentration of aniline in the solution is 0.25M.
[0048] 3. Place the solution obtained in step (2) under the condition of stirring in an ice-water bath, add concentrated phosphoric acid and concentrated hydrochloric acid, the acid concentrations in the solution are 0.3M and 0.16M respectively, control the pH of the solution <2, and stir for 15 minutes.
[0049] 4. Add ammonium persulfate to the solution obtained in step (3), the initial concentration of ammonium persulfate in the solution is 0.063M, and then continue stirring for 6 hours under an ice-water bath to obtain a dark green suspension. The resulting suspension was transferred i...
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