Core-shell structure composite material composed of transition metal oxide grown on nickel foam in situ and metal organic skeleton
A metal-organic framework and in-situ growth technology, applied in the field of materials science, can solve problems such as poor electronic conductivity, and achieve the effects of easy operation, easy operation, and increased specific capacitance
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[0034] Example 1 Core-shell structure composite material composed of transition metal oxide and metal-organic framework grown in situ on nickel foam (1) Preparation of CoO@Ni:
[0035] Add 0.05mmol of cobalt nitrate, 0.3mmol of urea, and 0.2mmol of ammonium fluoride into 2mL of deionized water, stir and mix evenly to obtain a mixed solution, and clean nickel foam (1×1.5cm 2 ) into the mixed solution, and then transfer the nickel foam and the mixed solution to a polytetrafluoroethylene autoclave with a volume of 10 mL. The reactor was sealed and placed in an oven. Heat the temperature of the oven from room temperature to 100°C at a rate of 2°C min -1 , and keep the temperature under this condition for 10 hours. Slowly cool to room temperature and let it stand for at least 1 day to obtain nickel foam coated with dark red precipitate; filter, wash with water and ethanol in sequence, and dry in air at 60°C for 6 hours, transfer the obtained product to a tube furnace, heat up Ca...
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