▎ 摘　　要

NOVELTY - Producing graphene, comprises exfoliating graphene by applying a voltage to a working electrode and a counter electrode installed in an electrolyte solution to which an antioxidant or a reducing agent is added. USE - The method is useful for producing graphene. ADVANTAGE - The method prevents the excessive oxidation during the oxidation process of carbon material such as graphite, defects that inevitably occur are healed so that the carbon content is high, the graphene with less damage and excellent electrical conductivity can be produced simply and efficiently, and simultaneously performs the exfoliation and doping with heterogeneous element, if a material that contains a heterogeneous element such as thiourea dioxide and can be electrochemically decomposed to produce activated ions is used. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene, produced by the manufacturing method, where the atomic percentage of the carbon element is ≥ 80%, and the atomic percentage of the carbon element relative to the oxygen element with a ratio (C/O) of 5.6-19.