Derivative electrocatalyst for growing Prussian blue or Prussian blue analogues in situ on metal substrate and preparation method of derivative electrocatalyst
A Prussian blue, metal-based technology, used in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as low resistance and achieve effective, good Catalytic activity and stability, the effect of reducing resistance
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Embodiment 1
[0049] A preparation method for in-situ growth of copper-iron Prussian blue oxide derivative electrocatalyst on foamed copper, the steps are as follows:
[0050] (1) Ultrasonicate the foamed copper with acetone for 1h, dry it, dissolve 5g of potassium ferricyanide in 1L of water, and ultrasonically form a uniform potassium ferricyanide aqueous solution, immerse the foamed copper in the potassium ferricyanide aqueous solution, add hydrochloric acid 10mL , at 10°C, treated for 0.3h, after the reaction was completed, the foamed copper was washed and dried to obtain the foamed copper that grew copper-iron Prussian blue analogues;
[0051] Electron micrographs and X-ray diffraction patterns of copper foam grown with copper-iron Prussian blue analogues figure 1 , figure 2 shown by figure 2 It can be seen that its diffraction peaks coincide with the standard card of the Prussian blue analogue, proving the formation of the Prussian blue analogue.
[0052] (2) Put the copper foam ...
Embodiment 2
[0055] A kind of preparation method of electrocatalyst of in-situ growth nickel-iron Prussian blue oxide derivatives on nickel foam, the steps are as follows:
[0056] (1) Ultrasonicate the nickel foam with acetone for 5 hours, dry it in the air, dissolve 10g of potassium ferricyanide in 1L of water, and ultrasonically form a uniform potassium ferricyanide aqueous solution, immerse the foam nickel in the potassium ferricyanide aqueous solution, add 50mL of hydrochloric acid , at 10° C., treated for 1 h, after the reaction was completed, the foamed nickel was washed and dried to obtain foamed nickel that grew nickel-iron-Prussian blue analogues;
[0057] (2) Put the nickel foam grown on nickel-iron Prussian blue analogue into a tube furnace, and calcinate it at 350°C for 3h in the air atmosphere, with a heating rate of 2°C / min, to obtain in-situ growth of nickel-iron Prussian blue oxidation on the foamed nickel derivative electrocatalysts.
Embodiment 3
[0059] A method for preparing an electrocatalyst for in-situ growth of copper-iron Prussian blue phosphide derivatives on foamed copper, the steps are as follows:
[0060] (1) Ultrasonicate the copper foam with acetone for 2 hours, dry it, dissolve 15g of potassium ferricyanide in 1L of water, and form a uniform potassium ferricyanide aqueous solution by ultrasonication, immerse the foam copper in the potassium ferricyanide aqueous solution, add 10mL of hydrochloric acid , at 60 ° C, treated for 1 h, after the reaction was completed, the foamed copper was washed and dried to obtain the foamed copper that grew copper-iron Prussian blue analogues;
[0061] (2) Put the foamed copper that grows copper-iron Prussian blue analog into a tube furnace, add 200 mg of sodium hypophosphite to the magnetic boat, and calcinate at 345°C for 3h with a heating rate of 10°C / min to obtain foamed copper In situ growth of copper-iron Prussian blue phosphide derivative electrocatalysts.
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