▎ 摘　　要

NOVELTY - An aluminum substrate having surface covered with catalyst grains is prepared. The resultant product is placed in plasma enhanced chemical vapor deposition vacuum device, evacuated, hydrogen introduced, and heated. To the resultant product, argon is injected, flow rate, intensity of pressure and radio-frequency power are adjusted, resultant product is etched, and purged with argon. To the resultant product, methane and hydrogen are injected, and deposition is carried out. The resultant product is cooled, to obtain graphene nanobelt-aluminum supercapacitor collector electrode. USE - Preparation of graphene nanobelt-aluminum supercapacitor collector electrode (claimed). ADVANTAGE - The method enables simple preparation of graphene nanobelt-aluminum supercapacitor collector electrode having high specific surface area, and excellent electrical property, without any generating structural defects and surface oxygen-containing functional groups. DETAILED DESCRIPTION - An aluminum substrate having surface covered with catalyst grains is prepared by uniformly coating 1-10 cm2 of aluminum substrate surface with 2-20 mL 0.01-0.1 mol/L nickel nitrate solution, heating the aluminum substrate surface coated with nickel nitrate solution to 100-200 degrees C, and evaporating to dryness. The resultant product is placed in plasma enhanced chemical vapor deposition vacuum device, evacuated to pressure of less than 5 Pa, hydrogen introduced by adjusting the hydrogen gas flow rate to 10-50 sccm, the pressure of the device is adjusted to 100-300 Pa, and heated at 300-500 degrees C in hydrogen atmosphere for 15 minutes. To the resultant product, argon is injected, such that the argon gas flow rate is adjusted to 5-40 sccm, hydrogen gas flow rate is adjusted to 10-50 sccm, device pressure is adjusted to 200-500 Pa, and radio-frequency power is adjusted to 50-150 W, and the resultant product is etched at 300-550 degrees C and 200-500 Pa for 30-180 seconds, and the resultant product is purged with argon. To the resultant product, methane and hydrogen are injected, such that methane gas flow is adjusted to 10-40 sccm, hydrogen gas flow rate is adjusted to 80 sccm, device pressure is adjusted to 200-500 Pa, radio-frequency power is adjusted to 125-175 W, and deposition is carried out at 300-550 degrees C and 200-500 Pa for 30-90 minutes. Then, radio-frequency power and heating power are closed, methane is passed, and the resultant product is cooled from 300-550 degrees C to room temperature in hydrogen atmosphere, to obtain graphene nanobelt-aluminum supercapacitor collector electrode.