Method for preparing electrode of supercapacitor based on reel-to-reel printing technique
A technology of supercapacitor and printing technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors.
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Embodiment 1
[0016] The method for preparing electrode in the present embodiment comprises the following steps:
[0017] (1) Use isopropanol, ethanol, deionized water to ultrasonically clean the foamed nickel substrate for 30 minutes, and dry it for later use; respectively take a certain amount of activated carbon and place it in a 90-degree oven to dry for 1 hour and polyvinylidene fluoride ( PVDF) placed in an oven at 80 degrees and dried for 6 hours before use;
[0018] (2) Dissolve the dried PVDF in N-methylpyrrolidone (NMP), prepare a 2% PVDF solution, and stir at room temperature for 10 hours;
[0019] (3) Get 18g activated carbon and 2g PVDF solution and mix, after stirring for 2 hours, then add 2% silver nanowires, stir for 30 minutes and then prepare printing paste;
[0020] (4) Apply roll-to-roll micro-gravure printing to the above-mentioned prepared slurry on the aluminum foil, the base width of the aluminum foil is 15cm, the coating speed is set to 0.2m / min, and the coating sp...
Embodiment 2
[0025] The method for preparing electrode in the present embodiment comprises the following steps:
[0026] (1) Use isopropanol, ethanol, and deionized water to ultrasonically clean the nickel foam substrate for 30 minutes, and dry it before use; take a certain amount of activated carbon and dry it in an oven at 90 degrees for 1 hour and PVDF at 80 degrees Dry in the oven for 6 hours before use;
[0027] (2) Dissolve the dried PVDF in NMP, prepare a 2% PVDF solution, and stir at room temperature for 10 hours;
[0028] (3) Get 12g activated carbon, the mixture of 6g carbon nanotubes and 2g PVDF solution mix, after stirring for 2 hours, then add 4% silver nanowires, stir for 30 minutes and then prepare printing paste;
[0029] (4) Apply the above-mentioned prepared slurry to the aluminum foil by slit coating. The width of the base of the aluminum foil is 15 cm, the speed of the base is 0.3 m / min, the thickness of the gasket is between 2 microns and 10 microns, and the ink is in...
Embodiment 3
[0034] The method for preparing electrode in the present embodiment comprises the following steps:
[0035] (1) Use isopropanol, ethanol, and deionized water to ultrasonically clean the foamed nickel substrate for 30 minutes, and dry it for use; take a certain amount of graphene and place it in a 90-degree oven for 1 hour and PVDF in a 80-degree oven. Dry in an oven for 6 hours before use;
[0036] (2) Dissolve the dried PVDF in NMP, prepare a 2% PVDF solution, and stir at room temperature for 10 hours;
[0037] (3) Get 18g graphene and 2gPVDF solution to mix, after stirring for 2 hours, then add 3% silver nanowires, stir for 30 minutes and then prepare printing paste;
[0038] (4) Apply roll-to-roll micro-gravure printing to the above-mentioned prepared slurry on the aluminum foil, the base width of the aluminum foil is 15cm, the coating speed is set to 0.2m / min, and the coating speed ratio is 90% to 360%, which can form a uniform The thin film electrodes are dried in an 80...
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