Foam metal-graphene composite material and preparation method thereof
A technology of metal foam and composite materials, applied in the direction of electrolytic coating, electrophoretic plating, coating, etc., can solve the problems of complicated operation and high price of the instrument, and achieve the effect of good conductivity, low cost and simple operation
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Embodiment 1
[0028] (1) Clean the foamed nickel substrate: PPI is 20, 90, 110, and three kinds of foamed nickel with a thickness of 1.5mm are immersed in a mixed solution of acetone and ethanol with a volume ratio of 1:1 and ultrasonically cleaned for 30 minutes, and then cleaned at 6mol / L Soak in HCl solution for 30 minutes to remove surface oxides, and finally wash with deionized water and dry for later use;
[0029] (2) Preparation of graphene: Using the improved hummer's method, add 50ml of 98% concentrated sulfuric acid to a 250ml beaker, heat the oil bath to 90°C, add 10g of K 2 S 2 o 8 and 10g P 2 o 5 , after dissolving, cool down to 80°C, add 12g of graphite powder to react for 4-5h, then cool to room temperature, add 2L of deionized water overnight, filter with suction, and dry at room temperature to obtain pre-oxidized graphite powder. Add 6g of pre-oxidized graphite powder to a beaker containing 230ml of concentrated sulfuric acid, stir in an ice bath for 30min, then gradual...
Embodiment 2
[0038] Select foamed nickel with a pore size of 110PPI and a thickness of 0.5mm, 1.0mm, and 1.5mm as the research object to prepare a foamed nickel-graphene composite material. The specific experimental steps are as follows:
[0039] (1) Clean the foamed nickel substrate: PPI is 110, and three kinds of foamed nickels with thicknesses of 0.5mm, 1.0mm, and 1.5mm are immersed in a mixed solution of acetone and ethanol with a volume ratio of 1:1 and ultrasonically cleaned for 30 minutes, and then cleaned in 6mol Soak in 1 / L HCl solution for 30 minutes to remove surface oxides, and finally wash with deionized water and dry for later use;
[0040] (2) prepare graphene with embodiment 1;
[0041] (3) Modified graphene: Weigh 45mg of graphene and 45mg of Mg(NO 3 ) 2 ·6H 2 O electrolyte was added in isopropanol to prepare an electrophoretic solution with a graphene concentration of 0.3 mg / ml, and ultrasonicated for 3 hours at room temperature to obtain an electrophoretic solution; ...
Embodiment 3
[0045] Replace the nickel foam with PPI20, the thickness is 1.5mm, the experimental steps are as follows:
[0046] (1) Clean the foamed nickel substrate: PPI is 20, and the foamed nickel with a thickness of 1.5 mm is immersed in a mixed solution of acetone and ethanol with a volume ratio of 1:1 and ultrasonically cleaned for 30 minutes, and then soaked in 6mol / L HCl solution for 30 minutes To remove surface oxides, finally wash with deionized water and dry for later use;
[0047] (2) prepare graphene with embodiment 1;
[0048] (3) Modified graphene: Weigh 15 mg of graphene and 30 mg of Mg(NO 3 ) 2 ·6H 2 O electrolyte is added in isopropanol, the concentration of preparation graphene is the electrophoretic liquid of 0.1mg / ml, ultrasonic 3h at room temperature, obtains electrophoretic liquid;
[0049] (4) Electrophoretic deposition: the above-mentioned cleaned nickel foam is used as the cathode, and the platinum electrode is used as the anode. Put it into the electrophoreti...
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