Nickel or nickel alloy porous material with directional holes, preparation method thereof and application thereof in a hydrogen evolution electrode
A technology of porous materials and nickel alloys, applied in electrodes, metal processing equipment, electrolysis processes, etc., can solve the problems of no directional pore structure, uneven pore size of porous copper, etc., to improve electrolysis efficiency, reduce hydrogen evolution overpotential, raw materials A wide range of effects
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[0041] Example 1
[0042] A Ni-Mo alloy porous material with directional pores in this embodiment, the composition of the porous material is a nickel-molybdenum binary alloy; wherein: the pore diameter of the porous material is ~7 μm; the porosity of the porous material is 85%.
[0043] The Ni-Mo alloy porous material with directional pores described above in this embodiment is prepared by the following method, and the method specifically includes the following steps:
[0044] Add 52.3g NiO powder, 5.3g MoO to the ball mill 3 powder, 81g deionized water and 1.5g gelatin as binder, 0.081g xanthan gum as thickener, after ball milling and mixing for 12h, a uniform water-based slurry was obtained; the slurry was injected into a square plastic with copper at the bottom The mold is placed on the copper substrate connected to the freezing device at the lower end, and the temperature at the lower end of the cold field is set to -50°C and the temperature at the upper end is -5°C. Aft...
Example Embodiment
[0046] Example 2
[0047] In this embodiment, a porous nickel with directional pores is provided, and the composition of the porous material is pure nickel; wherein: the pore diameter of the porous material is ~25 μm; and the porosity of the porous material is 70%.
[0048] The porous nickel with directional pores described above in this embodiment is prepared by the following method, and the method specifically includes the following steps:
[0049] 95g of nickel powder, 60g of deionized water and 1.8g of gelatin were added to the mixing tank as a binder, and 0.012g of methyl cellulose was used as a thickener. After ball milling and mixing for 12 hours, a uniform water-based nickel slurry was obtained; The material is injected into a mold with a copper bottom end, and placed on a copper substrate connected to a freezing device at the bottom end. The temperature at the lower end of the cold field is set to -20°C, and the temperature at the upper end is -20°C. After the green b...
Example Embodiment
[0050] Example 3
[0051] In a porous nickel-copper alloy with directional pores of the present embodiment, the composition of the porous material is nickel and copper; wherein: the pore diameter of the porous material is ~15 μm; the porosity of the porous material is 60%.
[0052] The porous nickel-copper alloy with directional pores described above in this embodiment is prepared by the following method, and the method specifically includes the following steps:
[0053] Add 100g nickel-copper alloy powder (copper content 32%), 50g deionized water and 2.5g gelatin into the ball mill jar as a binder, 0.010g methyl cellulose as a thickener, and after ball milling for 12 hours, a uniform water is obtained. Base nickel-copper alloy slurry; inject the slurry into a square plastic mold with copper at the bottom, put it on the copper substrate connected to the freezing device at the lower end, set the temperature at the lower end of the cold field to -30°C, and the temperature at the...
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