Nickel-based electrolysis hydrogen evolution porous cathode material and preparation method thereof
A cathode material, electrolysis technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of high electrocatalytic activity, poor corrosion resistance, unstable hydrogen evolution, etc., and achieve high electrocatalytic activity and good mechanical properties. , the effect of reducing the hydrogen evolution overpotential
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Embodiment 1
[0024] Weigh the four high-purity powders of Ni, Fe, Mo, and Mn by mass percentage, among which the content of Fe with a particle size of 3 µm is 10 wt %; the content of Mo with a particle size of 3 µm is 10 wt %; Mn with a diameter of 5 µm, its content is 12wt%; the balance is Ni with a powder particle size of 4 µm. Mix the prepared powder on a V-type powder mixer at a constant speed for 8 hours, then add 1% stearic acid of the total powder mass, dry it in an ordinary drying oven at 40°C for 8 hours, and cold press it under a cold press at a pressure of 150 MPa. , the pressure holding time is about 80s; the pressed sample is placed in a vacuum furnace, and the vacuum degree is 1x10 -2 In the case of Pa, raise the temperature from room temperature to 110°C at a heating rate of 5°C / min, and hold for 35 minutes; then raise the temperature to 290°C at a heating rate of 5°C / min, and hold for 70 minutes; then raise the temperature at a heating rate of 8°C / min to 370°C and keep at ...
Embodiment 2
[0027] Weigh four high-purity powders of Ni, Fe, Mo, and Mn by mass percentage, among which Fe with a particle size of 3 µm has a content of 12 wt%; Mo with a particle size of 5 µm has a content of 12 wt%; Mn with a diameter of 4µm, its content is 8wt%; the balance is Ni with a powder particle size of 4µm. Mix the prepared powder on a V-type powder mixer at a constant speed for 8 hours, then add 1% stearic acid of the total powder mass, dry it in an ordinary drying oven at 35°C for 8 hours, and cold press it at a pressure of 120 MPa under a cold press. , the pressure holding time is about 80s; the pressed sample is placed in a vacuum furnace, and the vacuum degree is 1x10 -3In the case of Pa, raise the temperature from room temperature to 100°C at a heating rate of 8°C / min, and hold for 30 minutes; then raise the temperature to 280°C at a heating rate of 3°C / min, and hold for 60 minutes; then raise the temperature at a heating rate of 5°C / min to 360°C and keep at this tempera...
Embodiment 3
[0029] Weigh four high-purity powders of Ni, Fe, Mo, and Mn by mass percentage, among which Fe with a particle size of 5 µm has a content of 15 wt %; Mo with a particle size of 4 µm has a content of 15 wt %; Mn with a diameter of 3 µm, its content is 5wt%; the balance is Ni with a powder particle size of 5 µm. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 6 hours, then add 1% stearic acid of the total powder mass, dry it in a common drying oven at 35°C for 10 hours, and cold press it at a pressure of 140 MPa under a cold press. , the holding time is about 70s; the pressed sample is placed in a vacuum furnace, and the vacuum degree is 1x10 -3 In the case of Pa, raise the temperature from room temperature to 120°C at a rate of 10°C / min and keep it for 40 minutes; then raise the temperature to 285°C at a rate of 8°C / min and keep it for 80 minutes; then raise the temperature at a rate of 10°C / min to 380°C and keep at this temperature for 55mi...
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