▎ 摘　　要

NOVELTY - Manufacture of graphene involves sintering (S100) a mixed powder containing a metal and graphite to produce a sintered component containing diamond and unreacted graphite, immersing (S200) the sintered component in a strong acid to which potassium permanganate is added, electrolyzing into a mixture containing diamond and graphite, peeling (S300) the graphite in the mixture, recovering (S400) the exfoliated graphene grains and reducing (S500) the recovered oxidized graphene. USE - Manufacture of graphene. Uses include but are not limited to displays, secondary battery, solar cell, vehicle and lamp. ADVANTAGE - The method economically produces graphene with high productivity in a short period of time by simple process and by excluding additional expenses including waste treatment cost and is environmentally-friendly. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of manufacture of graphene. Sintering process (S100) Sintered component immersion process (S200) Graphite peeling process (S300) Recovering process (S400) Oxidized graphene reduction process (S500)