Patent ID: 9410041
Filing Date: 2016-08-09
CPC Classification: C01B

Claim Text:
1. A method of surface modifying graphene for performing a surface modifying process on graphene, comprising: a surface cleaning step for placing a graphene powder mixed with a surface modifying agent in a closed container in vacuum, heating the graphene powder up to a treatment temperature higher than a preset impurity desorption temperature for a period of time to desorb an impurity attached to the surface of the graphene powder by vacuum and heating such that the impurity is removed due to thermal decomposition into gas dispersing away; and a surface treatment step for adjusting the treatment temperature to a surface modifying adsorption temperature that is higher than the sublimation point of the surface modifying agent and lower than a thermal decomposition temperature of the surface modifying agent and injecting a gaseous surface modifying agent having a sublimation point such that the surface modifying agent is adsorbed on the surface of the graphene powder due to a physical adsorption effect of π-π stacking and surface modified graphene is obtained to accomplish the method of surface modifying graphene.