▎ 摘　　要

NOVELTY - Zinc salt is added to graphene oxide dispersion, stirred uniformly, and sodium hydroxide solution or aqueous ammonia is added to adjust the pH. 100 ml Obtained mixed solution is subjected to hydrothermal reaction at 80-180 degrees C for 2-10 hours, and naturally cooled to room temperature. The resultant material is washed with water and ethanol each three times, vacuum-dried, and partial reduction process is carried out. The obtained composite material is calcined under inert atmosphere, and cooled to room temperature to obtain zinc oxide/graphene composite. USE - Manufacture of zinc oxide/graphene composite used as cathode material for lithium ion battery. ADVANTAGE - The method efficiently and economically provides zinc oxide/graphene composite having excellent electroconductivity, volume expansion effect and cycling stability, by simple method. DETAILED DESCRIPTION - 0.008-0.08 g Graphite oxide is added to 80 ml solvent, and the mixture is placed in ultrasonic cleaning instrument under ultrasonic frequency of 40 kHz and sonicated for 0.5-3 hours to obtain graphene oxide dispersion. 0.002-0.3000 g Zinc salt is added to prepared graphene oxide dispersion, stirred uniformly, and sodium hydroxide solution or aqueous ammonia is added to adjust the pH of the mixed solution to 8-13. 100 ml Mixed solution is subjected to hydrothermal reaction in a hydrothermal reaction vessel, at 80-180 degrees C for 2-10 hours, and naturally cooled to room temperature. The resultant material is washed with water and ethanol each three times, vacuum-dried, and partial reduction process is carried out. The obtained composite material is calcined under inert atmosphere, and cooled to room temperature to obtain zinc oxide/graphene composite.