▎ 摘　　要

NOVELTY - Nickel-copper-titanium/graphene porous composite material prepared by (a) taking a three high-purity powders of copper, titanium, single-layer graphene high-purity powder and nickel, (b) adding the graphene powder into deionized water, adding sodium dodecylbenzene sulfonate (SDBS), Tween-20 (RTM: Polysorbate-20), polyvinylpyrrolidone, and adding the mixed solution in an ultrasonic cleaning machine for ultrasonic dispersion treatment, (c) mixing the nickel, copper, titanium powder into the ultrasonic solution, and placing on a magnetic stirrer to stir until the solution separates, (d) vacuum filtering the stirred solution, and placing the separated powder in a vacuum drying oven, (e) ball milling, (f) passing the dried powder through a 60-mesh sieve, (g) adding the sieved powder into a mold and pressing, and (h) sintering. USE - Used as nickel-copper-titanium/graphene porous composite material. ADVANTAGE - The method is simple, controllable, environmentally-friendly and suitable for large-scale industrial production. The obtained porous composite material has rich pores and uniform distribution, a large specific surface area, high electrocatalytic activity, high hydrogen evolution efficiency, low power consumption, and excellent stability; and has great economic value to overcome the problems of low filtration efficiency, poor stability and high maintenance cost in the field of industrial filtration. DETAILED DESCRIPTION - Nickel-copper-titanium/graphene porous composite material prepared by (a) taking a three high-purity powders of 33-37 wt.% 3-5 mu m copper, 8-12 wt.% 3-5 mu m titanium, 0.1-0.3 wt.% 0.8 nm single-layer graphene high-purity powder and 3-5 mu m nickel (remaining amount), (b) adding the graphene powder into deionized water at a ratio of 0.1 g/l, and adding 68% sodium dodecylbenzene sulfonate (SDBS), respectively relative to the GR mass, 150% Tween-20 (RTM: Polysorbate-20) (WT-20), 150% polyvinylpyrrolidone (PVP), adding the mixed solution in an ultrasonic cleaning machine for ultrasonic dispersion treatment for 30 minutes, (c) mixing the nickel, copper, titanium powder into the ultrasonic solution, and placing on a magnetic stirrer to stir until the solution separates, (d) vacuum filtering the stirred solution, and placing the separated powder in a vacuum drying oven at 75 degrees C to dry for 5 hours, (e) adding the dried powder into a ball mill, adding an alcohol ball mill, drying, sieving the powder, adding 3-5% stearic acid relative to the powder mass, and drying in a vacuum drying oven at 75 degrees C for 5 hours, (f) passing the dried powder through a 60-mesh sieve, and taking the powder off the sieve for use, (g) adding the sieved powder into a mold and pressing into a green body under a hydraulic press, and (h) placing the pressed green body in a vacuum furnace for sintering, with a vacuum degree of not less than 2x 103 Mpa, where the sintering process is: heating the temperature from room temperature to 300 degrees C at a heating rate of 4-6 degrees C/minute, heating for 50-70 minutes, heating to 600 degrees C at a heating rate of 4-6 degrees C/minute for 50-70 minutes, heating to 900 degrees C at a heating rate of 4-6 degrees C/minute for 50-70 minutes, heating to 1000 degrees C at a heating rate of 2-3 degrees C/minute for 50-70 minutes, and cooling to room temperature with the furnace. An INDEPENDENT CLAIM is also included for preparing the nickel-copper-titanium/graphene porous composite material.