A kind of preparation method of graphene oxide doped gel electrolyte
A technology of gel electrolyte and graphene, applied in hybrid capacitor electrolyte, capacitor electrolyte/absorbent, hybrid/electric double layer capacitor manufacturing, etc., to achieve good flexibility, avoid contact, and simple preparation method
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Embodiment 1
[0014] Step S1: using the Hummer method to prepare a graphene oxide aqueous solution, and then preparing a 2 mg / mL graphene oxide aqueous solution by dilution;
[0015] Step S2: Add 1 g of high polymer polyvinyl alcohol to 10 mL of the graphene oxide aqueous solution diluted in step S1, and stir and dissolve at 85° C. to form a uniform mixed solution;
[0016] Step S3: Add electrolyte phosphoric acid to the homogeneous mixed solution obtained in step S2, wherein the added mass of electrolyte phosphoric acid is 5% of the mass of the homogeneous mixed solution, and stir for 3 hours to obtain a dark brown uniform graphene oxide-doped gel electrolyte.
Embodiment 2
[0018] Step S1: using the Hummer method to prepare a graphene oxide aqueous solution, and then preparing a 1 mg / mL graphene oxide aqueous solution by dilution;
[0019] Step S2: Add 3 g of high polymer polyvinyl alcohol to 10 mL of the graphene oxide aqueous solution diluted in step S1, stir and dissolve at 90° C. to form a homogeneous mixed solution;
[0020] Step S3: Add concentrated sulfuric acid as electrolyte to the homogeneous mixed solution obtained in step S2, wherein the added mass of concentrated sulfuric acid as electrolyte is 10% of the mass of the homogeneous mixed solution, and stir for 4 hours to obtain a dark brown uniform graphene oxide-doped gel electrolyte.
Embodiment 3
[0022] Step S1: using the Hummer method to prepare a graphene oxide aqueous solution, and then preparing a 5 mg / mL graphene oxide aqueous solution by dilution;
[0023] Step S2: Add 2 g of high polymer polyacrylonitrile to 10 mL of the graphene oxide aqueous solution diluted in step S1, and stir and dissolve at 80° C. to form a uniform mixed solution;
[0024] Step S3: Add electrolyte potassium hydroxide to the homogeneous mixed solution obtained in step S2, wherein the added mass of electrolyte potassium hydroxide is 20% of the mass of the homogeneous mixed solution, and stir for 6 hours to obtain a dark brown uniform graphene oxide doped gel electrolyte.
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