Nickel cobalt selenide/carbon composite material and preparation method and application thereof
A technology of carbon composite materials and nickel selenide, which is applied in the field of material synthesis and electrochemistry, can solve problems affecting stability and collapse of electrode material structures, and achieve the effects of improved stability, simple and easy preparation method, and high specific capacitance
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[0055] A kind of preparation method that can be used for the nickel-cobalt selenide / carbon composite material of supercapacitor electrode material, comprises the following steps:
[0056] (1) Weigh 1.455g of cobalt nitrate hexahydrate (molecular weight: 291.03) and 1.642g 2-methylimidazole (molecular weight: 82.1) and dissolve them in 80mL of anhydrous methanol respectively, sonicate until the solution is clear and transparent, then quickly mix the above two solutions , a purple precipitate appeared, ultrasonically dispersed to make it evenly mixed, self-assembled at room temperature for 24 hours, the solid material obtained after centrifugation was washed with absolute ethanol several times, and dried in an oven at 60°C for 12 hours to obtain a metal organic framework ZIF-67.
[0057] (2) Weigh 80 mg of metal-organic framework ZIF-67 powder in step (1) and dissolve it in 15 mL of absolute ethanol, weigh 160 mg of nickel nitrate hexahydrate (molecular weight 218.63) and dissol...
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