Study of the interface between ionic liquid and graphene oxide sheet using the Langmuir film procedure.

Supercapacitors devices based on graphene sheets (as electrode) and ionic liquid (IL) (as electrolyte) appears as very promising for future supercapacitors devices. We propose to use the Langmuir film procedure to elaborates such interface and choose to the study of Graphene oxide (GO) - [C20mim] [NTf2] IL mixed Langmuir film. Our aim is to obtain first a GO / IL interface and then explore it by X-Ray surface reflectivity (XRR), surface X-Ray Fluorescence (XRF) and surface diffraction (GIXD). This will allow in studying the IL / GO interaction in order to improve the energy storage density of supercapacitors.