Conductive polypyrrole hydrogel electrode material, its preparation method and stretchable supercapacitor
A technology of electrode material and conductive polymer, which is applied in the direction of hybrid capacitor electrodes, can solve the problems of low energy density and power density, damage to electrochemical properties, and low specific capacitance value, so as to achieve high energy density and power density and improve electrochemical performance. performance, the effect of higher specific capacitance
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[0045] The invention provides a preparation method of a conductive polypyrrole hydrogel electrode material, comprising:
[0046] A) mixing an aqueous solution of a water-soluble polymer, deionized water and a surfactant to obtain a first solution; the water-soluble polymer has a flexible polymer chain;
[0047] B) mixing the organic compound with the first solution to obtain the second solution; the organic compound is selected from one or more of pyrrole and its derivatives;
[0048] C) mixing the aqueous solution of the oxidizing agent with the second solution to carry out a polymerization reaction to obtain a conductive polypyrrole hydrogel electrode material.
[0049] The invention mixes the aqueous solution of the water-soluble polymer compound, the deionized water and the surface active agent to obtain the first solution.
[0050] In the present invention, the water-soluble polymer has a flexible polymer chain, preferably polyvinyl alcohol, polyethylene glycol, polyacry...
Embodiment 1
[0091] Dissolve 2g of PVA-1750 in 18g of water, use a reflux device, stir magnetically, first swell at 60°C for 0.5h, then raise the temperature to 90°C and heat to dissolve for 2h to prepare a 10wt% PVA aqueous solution.
[0092] 1.5 g of the PVA aqueous solution, 0.5 g of deionized water and 115.3 mg (0.4 mmol) of sodium lauryl sulfate were mixed, heated at 50° C. to aid dissolution, and then cooled to room temperature to obtain a first solution.
[0093] 70 μL (1 mmol) of pyrrole was mixed with the first solution, and magnetically stirred to aid dissolution to obtain a second solution.
[0094] 228.2 mg (1 mmol) of ammonium persulfate was dissolved in 430 μL of water to obtain an aqueous solution of ammonium persulfate.
[0095] Put the aqueous solution of ammonium persulfate and the second solution in an ice bath below 5°C for 15 minutes, then add the aqueous solution of ammonium persulfate dropwise to the second solution, and stir evenly. At room temperature, polymerize f...
Embodiment 2
[0111] Dissolve 2g of PVA-2488 in 18g of water, use a reflux device, magnetically stir, first swell at 60°C for 0.5h, then raise the temperature to 90°C and heat to dissolve for 2h to prepare a 10wt% PVA aqueous solution.
[0112] 1.5 g of the PVA aqueous solution, 0.5 g of deionized water and 109.0 mg (0.4 mmol) of sodium dodecylsulfonate were mixed, heated at 50° C. to aid dissolution, and then cooled to room temperature to obtain a first solution.
[0113] 18 μL (0.2 mmol) of N-methylpyrrole and 56 μL (0.8 mmol) of pyrrole were mixed with the first solution, and magnetically stirred to aid dissolution to obtain a second solution.
[0114] 238 mg (1 mmol) of sodium persulfate was dissolved in 430 μL of water to obtain an aqueous solution of sodium persulfate.
[0115] Put the aqueous solution of sodium persulfate and the second solution in an ice bath below 5°C for 15 minutes, then add the aqueous solution of sodium persulfate dropwise to the second solution, and stir evenly...
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