Three-dimensional AgNWs/RGO hydrogel electrode material and preparation method and application thereof
An electrode material and hydrogel technology, which is applied in the field of three-dimensional AgNWs/RGO hydrogel electrode material and its preparation, can solve the problems that the electrochemical performance of capacitors needs to be improved, the specific surface area of electrode materials is reduced, and the electroactive sites are reduced. Achieve good application prospects, accelerate charge transfer kinetics, and excellent electrochemical performance
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[0032] Example 1
[0033] This embodiment provides a method for preparing a three-dimensional AgNWs / RGO hydrogel electrode material for supercapacitors, and the specific steps are as follows:
[0034] (1) Add 0.58g of the surfactant polyvinylpyrrolidone to 20mL of ethylene glycol, and then add 0.3mL of CuCl with a concentration of 0.01mol / L 2 ·2H 2 O ethylene glycol solution and 1.6 mL of NaBr ethylene glycol solution with a concentration of 0.005 mol / L were used as control agents, 0.59 g of silver nitrate was added, and the reaction was carried out at 175 °C for 13 min. After the reaction was completed, it was centrifuged and washed several times to obtain AgNWs.
[0035] (2) 1 mg / mL graphene oxide aqueous solution was prepared, and ultrasonically dispersed for 2 h; 1.6 mL of AgNWs absolute ethanol solution with a concentration of 5 mg / mL was added to 25 mL of the above graphene oxide aqueous solution, and mixed uniformly to obtain solution A.
[0036] (3) Add 0.15 g of asc...
Example Embodiment
[0043] Example 2
[0044] This embodiment provides a method for preparing a three-dimensional AgNWs / RGO hydrogel electrode material for supercapacitors, and the specific steps are as follows:
[0045] (1) Add 0.58g of the surfactant polyvinylpyrrolidone to 20mL of ethylene glycol, and then add 0.3mL of CuCl with a concentration of 0.01mol / L 2 ·2H 2 O ethylene glycol solution and 1.6 mL of NaBr ethylene glycol solution with a concentration of 0.005 mol / L were used as control agents, 0.59 g of silver nitrate was added, and the reaction was carried out at 175 °C for 13 min. After the reaction was completed, it was centrifuged and washed several times to obtain AgNWs.
[0046] (2) 1 mg / mL graphene oxide aqueous solution was prepared, and ultrasonically dispersed for 2 h; 0.8 mL of AgNWs absolute ethanol solution with a concentration of 5 mg / mL was added to 25 mL of the above graphene oxide aqueous solution, and mixed uniformly to obtain solution A.
[0047] (3) Add 0.15 g of asc...
Example Embodiment
[0049] Example 3
[0050] This embodiment provides a method for preparing a three-dimensional AgNWs / RGO hydrogel electrode material for supercapacitors, and the specific steps are as follows:
[0051] (1) Add 0.58g of the surfactant polyvinylpyrrolidone to 20mL of ethylene glycol, and then add 0.3mL of CuCl with a concentration of 0.01mol / L 2 ·2H 2 O ethylene glycol solution and 1.6 mL of NaBr ethylene glycol solution with a concentration of 0.005 mol / L were used as control agents, 0.59 g of silver nitrate was added, and the reaction was carried out at 175 °C for 13 min. After the reaction was completed, it was centrifuged and washed several times to obtain AgNWs.
[0052] (2) 1 mg / mL graphene oxide aqueous solution was prepared, and ultrasonically dispersed for 2 h; 0.4 mL of AgNWs absolute ethanol solution with a concentration of 5 mg / mL was added to 25 mL of the above graphene oxide aqueous solution, and mixed uniformly to obtain solution A.
[0053] (3) Add 0.15 g of asc...
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