Preparation method of efficient water splitting bifunctional electrocatalyst
An electrocatalyst and water double technology, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems of scarcity, stability obstacles, high cost, etc.
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[0026] The invention provides a preparation method of a high-efficiency water splitting bifunctional electrocatalyst, such as figure 1 As shown in the figure, it includes the following steps: S10 surface cleaning treatment, performing surface cleaning treatment on the metal nickel-iron substrate to obtain a clean metal nickel-iron substrate; S20 hot-dip galvanizing treatment, heating the metal nickel-iron substrate after the surface cleaning treatment Hot-dip galvanizing treatment is carried out in the molten metal zinc and zinc salt mixed solution; S30 alkali corrosion treatment, the metal nickel-iron substrate after hot-dip galvanizing treatment is immersed in an alkaline solution for corrosion treatment to obtain the electrolytic treatment. catalyst.
[0027] The step S10 includes the following steps: S11, placing the metal nickel-iron substrate in an acetone solution for ultrasonic cleaning for 10 to 30 minutes, and then repeatedly cleaning with ethanol to remove the greas...
Embodiment 1
[0032] The method for preparing electrodes using nickel foam as a metallic nickel-iron substrate is as follows:
[0033] S11, place the nickel foam in acetone solution for ultrasonic cleaning for 20 min, and then repeatedly wash with ethanol to remove the grease layer on the metal surface; S12 place the nickel foam after removing the grease layer on the metal surface in a hydrochloric acid solution with a concentration of 4 mol / L and ultrasonically for 5 min. And stand for 30 minutes, and then repeatedly washed with distilled water to remove the oxide layer on the metal surface, and after drying, the foamed nickel after the surface cleaning treatment was obtained.
[0034] S21 20g metal zinc and 10g zinc chloride salt are compacted in a nickel crucible in turn, heat the nickel crucible to 600 ℃, and keep for 2h; S22 put the nickel foam after surface cleaning treatment in the molten solution for hot dip galvanizing Treatment, galvanizing time is 120s; S23 is placed in distilled...
Embodiment 2
[0037] The method for preparing electrodes using foamed iron as a metallic nickel-iron substrate is as follows:
[0038]S11 put the iron foam in acetone solution for ultrasonic cleaning for 15min, and then repeatedly wash with ethanol to remove the grease layer on the metal surface; S12 put the iron foam after removing the grease layer on the metal surface into a hydrochloric acid solution with a concentration of 3 mol / L for ultrasonic 10min, And stand for 25 minutes, then repeatedly washed with distilled water to remove the oxide layer on the metal surface, and dried to obtain the foam iron after the surface cleaning treatment.
[0039] In S21, 60g of metallic zinc and 10g of zinc sulfate are successively compacted in a nickel crucible, and the nickel crucible is heated to 400°C and kept for 4h; S22, the foamed nickel after surface cleaning treatment is placed in a molten solution for hot-dip galvanizing Treatment, galvanizing time is 30s; S23 is placed in distilled water at ...
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