Abstract: A lithium secondary battery for thermal runaway delay, includes an electrode coated with a coating ink prepared by the method The method of preparing a coating ink composition uses expandable graphite (EG) as a starting material to obtain non-oxidized graphene, so there is no reduction process, no acid is used, and through a simple manufacturing process, manufacturing costs and times can be reduced while enabling mass-production and causing no environmental problems. Further, the coating ink composition prepared by the method of preparing the coating ink composition can improve properties such as viscosity, dispersion stability, electrical conductivity, and substrate adhesion of the ink by using a polymer as an additive. In addition, by coating the electrode of the secondary battery with the coating ink composition containing graphene nanoplatelets or non-oxidized graphene, thermal runaway due to overload of thermal energy generated within the secondary battery can be delayed and prevented.

Abstract: A method for continuously mass-manufacturing graphene using thermal plasma, the method for continuously mass-manufacturing graphene includes the steps of: (a) injecting an inert gas into a plasma device to generate plasma; (b) injecting expandable graphite and graphite intercalation compounds (GIC) into the plasma device in constant amounts; and (c) allowing the expandable graphite and GIC to be expanded by thermal plasma treatment so that graphene is exfoliated.

Abstract: A method for continuously mass-manufacturing graphene using thermal plasma, the method for continuously mass-manufacturing graphene includes the steps of: (a) injecting an inert gas into a plasma device to generate plasma; (b) injecting expandable graphite and graphite intercalation compounds (GIC) into the plasma device in constant amounts; and (c) allowing the expandable graphite and GIC to be expanded by thermal plasma treatment so that graphene is exfoliated.