▎ 摘　　要

NOVELTY - Preparation of graphene material includes putting the graphite electrode as anode and platinum electrode as a cathode into the electrolyte containing 98% concentrated sulfuric acid and deionized water with a pH between 1 to 3 and electrolytic electrode space of 2 to 4 cm, applying 1-2 V for 30 minutes, using 5-10 V constant voltage during electrolysis, filtering the electrolyte, washing reside, adding dispersant, ultrasonic washing in de-ionized water for 0.5-1 hours, centrifuging and taking out the supernatant liquid. USE - Preparation of graphene material used in producing hydrogen. DETAILED DESCRIPTION - Preparation of graphene material comprises putting the graphite pressing disc into the grinding tool electrode 2 mm thickness, applying pressure of 15-30 MPa for 10 to 20 minutes, putting the graphite electrode as anode and platinum electrode as a cathode into the electrolyte containing 98% concentrated sulfuric acid and deionized water with a pH between 1 to 3 and electrolytic electrode space of 2 to 4 cm, applying 1-2 V for 30 minutes, using 5-10 V constant voltage, during electrolysis, filter the electrolyte and using deionized water to wash the residual, adding dispersant to the filtrate, ultrasonic washing in de-ionized water for 0.5-1 hours, centrifuging for 5 to 10 minutes at 2000 to 3000 revolutions/minute and then taking the supernatant liquid to obtain the graphene.