Poly 3,4-ethylenedioxythiophene-coated graphene oxide preparation method and application thereof
A technology of ethylenedioxythiophene and stone oxide, which is applied in the direction of hybrid capacitor electrodes, can solve the problems of difficult dispersion and poor electrochemical performance, and achieve uniform coating, high specific capacitance, significant economic value and social benefits. Effect
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Embodiment 1
[0023] (1) Add 100 mg of graphene oxide to 100 mL of deionized water, stir magnetically for 45 min at room temperature, and then sonicate for 45 min to prepare a graphene oxide dispersion; add 40 mg of Congo red to the graphene oxide dispersion solution, and magnetically stirred at room temperature for 90 min to obtain a Congo red-loaded graphene oxide dispersion; add 100 mg of 3,4-ethylenedioxythiophene to the Congo red-loaded graphene oxide dispersion, and Stir magnetically for 45 min, then sonicate for 60 min, and finally stir magnetically for 20 min to prepare a mixture of 3,4-ethylenedioxythiophene and Congo red-loaded graphene oxide;
[0024] (2) Add 1.5 mL of ferric chloride hydrochloric acid solution dropwise at a rate of 15 drops / min to the above mixture, and react with magnetic stirring for 36 h at 10 °C; after the reaction, pour the reaction mixture into 300 mL of methanol, stirred magnetically at room temperature for 20 min, and then stood still for 24 h; filtered,...
Embodiment 2
[0029] (1) Add 80 mg of graphene oxide to 80 mL of deionized water, stir magnetically for 30 min at room temperature, and then sonicate for 30 min to prepare a graphene oxide dispersion; add 20 mg of Congo red to the graphene oxide dispersion solution, and magnetically stirred at room temperature for 60 min to obtain a Congo red-loaded graphene oxide dispersion; add 60 mg of 3,4-ethylenedioxythiophene to the Congo red-loaded graphene oxide dispersion, and Stir magnetically for 30 min, then sonicate for 30 min, and finally magnetically stir for 10 min to prepare a mixture of 3,4-ethylenedioxythiophene and Congo red-loaded graphene oxide;
[0030](2) Add 0.5 mL ferric chloride hydrochloric acid solution dropwise to the above mixture at a rate of 10 drops / min, and react with magnetic stirring for 48 h at 5 °C; after the reaction, pour the reaction mixture into 200 mL of methanol, stirred magnetically at room temperature for 10 min, and then stood still for 12 h; filtered, cross-w...
Embodiment 3
[0033] (1) Add 120 mg graphene oxide to 120 mL deionized water, stir magnetically for 60 min at room temperature, and then ultrasonicate for 60 min to prepare a graphene oxide dispersion; add 60 mg Congo red to the graphene oxide dispersion solution, stirred magnetically at room temperature for 120 min to obtain a Congo red-loaded graphene oxide dispersion; 160 mg of 3,4-ethylenedioxythiophene was added to the Congo red-loaded graphene oxide dispersion, and first Stir magnetically for 60 min, then sonicate for 90 min, and finally magnetically stir for 30 min to prepare a mixture of 3,4-ethylenedioxythiophene and Congo red-loaded graphene oxide;
[0034] (2) Add 3 mL ferric chloride hydrochloric acid solution dropwise at a rate of 20 drops / min to the above mixture, and react with magnetic stirring for 24 h at 20 °C; after the reaction, pour the reaction mixture into 400 mL of methanol, stirred magnetically at room temperature for 30 min, and then stood still for 36 h; filtered,...
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