Research on fabrication of modified graphene nanoplalelets conductive ink

Abstract

In this experiment, we studied and successfully modified graphene with oleic acid, proposed the modification process and selected the optimal 2.5% oleic acid content to modify GNPs. From there, we successfully manufactured conductive ink with CAB binder, ethyl acetate solvent and modified nano-graphene. Through the process of surveying and evaluating the effects on the material synthesis process, the optimal parameters for manufacturing conductive ink are given: ink with a composition ratio of 6% graphene powder (modified with 2,5% oleic acid) and 0.75% cellulose acetate butyrate binder dissolved in ethyl acetate solvent. In this ink formula, the lowest resistance obtained is 22 Ω and the resistivity is 7.56 Ω/cm^-2.