Supercapacitor electrode material and preparation method thereof
A technology of supercapacitors and electrode materials, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors.
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[0027] Example 1:
[0028] (1)NiCo 2 O 4 / NF sample preparation:
[0029] Weigh 1mmol Ni(NO 3 ) 2 ·6H 2 O, 2mmol of Co(NO 3 ) 2 ·6H 2 Put O and 5mmol of urea in a beaker, add deionized water to it, stir magnetically until it is completely dissolved, then add the resulting transparent pink solution to a polytetrafluoroethylene reactor, and add the pretreated nickel foam for hydrothermal reaction , 130℃, 5h; After cooling to room temperature naturally, take out the foamed nickel, wash with water and alcohol several times, and dry to obtain NiCo 2 O 4 / NF precursor sample. Wait for NiCo 2 O 4 After the / NF precursor sample is dried, the sample is transferred to a temperature-programmed tube furnace for calcination at 350°C for 2h. After being naturally cooled to room temperature, take it out and set aside. Calcined NiCo 2 O 4 The heating rate of the / NF precursor sample is 4℃ / min, and the calcination time is 2h.
[0030] (2)NiCo 2 O 4 -Ni(OH) 2 / NF composite material preparation:
[0...
Example Embodiment
[0032] Example 2:
[0033] (1)NiCo 2 O 4 / NF sample preparation:
[0034] Weigh 2mmol Ni(NO 3 ) 2 ·6H 2 O, 4mmol of Co(NO 3 ) 2 ·6H 2 Put O and 10mmol of urea in a beaker, add deionized water to it, stir it magnetically until it is completely dissolved, then add the resulting transparent pink solution to a polytetrafluoroethylene reactor, and add the pretreated nickel foam for hydrothermal reaction , 130℃, 5h; After cooling to room temperature naturally, take out the foamed nickel, wash with water and alcohol several times, and dry to obtain NiCo 2 O 4 / NF precursor sample. Wait for NiCo 2 O 4 After the / NF precursor sample is dried, the sample is transferred to a temperature-programmed tube furnace for calcination. After being naturally cooled to room temperature, take it out and set aside. Calcined NiCo 2 O 4 The heating rate of the / NF precursor sample is 4℃ / min, the calcination temperature is 350℃, and the time is 2h.
[0035] (2)NiCo 2 O 4 -Ni(OH) 2 / NF composite material pre...
Example Embodiment
[0037] Example 3:
[0038] (1)NiCo 2 O 4 / NF sample preparation:
[0039] Weigh 4mmol Ni(NO 3 ) 2 ·6H 2 O, 8mmol of Co(NO 3 ) 2 ·6H 2 Put O and 20mmol of urea in a beaker, add deionized water to it, magnetically stir until it is completely dissolved, then add the resulting transparent pink solution to a polytetrafluoroethylene reactor, and add the prepared foamed nickel for hydrothermal reaction 130 ℃, 5h; after natural cooling to room temperature, take out the foamed nickel, wash with water and alcohol several times, and dry to obtain NiCo 2 O 4 / NF precursor sample. Wait for NiCo 2 O 4 After the / NF precursor sample is dried, the sample is transferred to a temperature-programmed tube furnace for calcination. After being naturally cooled to room temperature, take it out and set aside. Calcined NiCo 2 O 4 The heating rate of the / NF precursor sample is 4℃ / min, the calcination temperature is 350℃, and the time is 2h.
[0040] (2)NiCo 2 O 4 -Ni(OH) 2 / NF composite material preparati...
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