A preparation method of a porous nickel alloy electrolysis hydrogen composite cathode material
A composite cathode and electrolysis technology, which is applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of low catalytic activity of hydrogen evolution electrodes, poor resistance to power failure and short circuit, and poor corrosion resistance, so as to reduce the hydrogen evolution process. Potential, good catalytic performance, good stability
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Embodiment 1
[0030] Ni, Fe, Mo, C, LaNi 5 The five kinds of powders are prepared according to the proportion, among which Fe content is 25wt%, powder particle size is 3μm; Mo content is 5wt%, powder particle size is 3μm; C content is 5wt%; LaNi 5 The content is 1 wt%, and the powder particle size is 80 μm. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 10 hours, then add stearic acid of 2% of the total powder mass, dry for 10 hours, and cold-press at a pressure of 250 MPa under a cold press for about 2 minutes. ; Place the pressed sample in a vacuum furnace at a vacuum of 1×10 -2In the case of Pa, maintain a heating rate of 10°C / min, from room temperature to 100°C, and hold for 30 minutes; then raise the temperature to 250°C at a heating rate of 10°C / min, and hold for 30 minutes; then raise the temperature at a heating rate of 10°C / min to 350°C and keep at this temperature for 30min; then raise the temperature to 490°C at a heating rate of 10°C / min an...
Embodiment 2
[0033] Ni, Fe, Mo, C, LaNi 5 The five kinds of powders are prepared in proportion, among which Fe content is 30wt%, powder particle size is 3μm; Mo content is 10wt%, powder particle size is 3μm; C content is 10wt%; LaNi 5 The content is 2wt%, and the powder particle size is 80 μm. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 10 hours, add 1% stearic acid of the total powder mass, and then dry it for 8 hours, and then cold press it under a cold press at a pressure of 200 MPa. The holding time is about 2min; place the pressed sample in a vacuum furnace at a vacuum of 1×10 -2 In the case of Pa, maintain a heating rate of 10°C / min, from room temperature to 120°C, and hold for 30 minutes; then raise the temperature to 280°C at a heating rate of 10°C / min, and hold for 30 minutes; then raise the temperature at a heating rate of 10°C / min to 360°C and keep at this temperature for 40 minutes; then raise the temperature to 500°C at a rate of 10°C / ...
Embodiment 3
[0036] Ni, Fe, Mo, C, LaNi 5 The five kinds of powders are prepared according to the proportion, among which Fe content is 25wt%, powder particle size is 3μm; Mo content is 1wt%, powder particle size is 3μm; C content is 1wt%; LaNi 5 The content is 0.5wt%, and the powder particle size is 30μm. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 10 hours, add 1.5% stearic acid of the total mass of the powder, and then dry it for 9 hours. 3min; place the pressed sample in a vacuum furnace at a vacuum of 1×10 -2 In the case of Pa, maintain a heating rate of 10°C / min, from room temperature to 130°C, and hold for 20 minutes; then raise the temperature to 300°C at a heating rate of 10°C / min, and hold for 20 minutes; then raise the temperature at a heating rate of 10°C / min to 380°C and keep at this temperature for 20min; then raise the temperature to 550°C at a rate of 10°C / min and keep at this temperature for 40min; then raise the temperature at a r...
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