Preparation And Mechanical Properties Of The Graphene And Graphene Oxide Materials

In this paper, graphene materials were prepared by chemical method, and studies onits application were carried out. Flexible hybird graphene/TiO2film has been fabricatedby a simple solvent evaporation technique. The morphology, structure andelectrochemical performance of the hybird film were characterized by scanningelectron microscopy(SEM), atomic force microscopy(AFM), X-ray diffraction(XRD),and battery-test equipment.Ultra-light porous nanostructure graphene oxide (GO) foams were prepared byvacuum freeze drying technique. Mechanical properties of GO foams with differentdensity were investigated under uniaxial compression at different strain rates. Effectsof density and strain rates on mechanical performance of GO foams were alsodiscussed. GO foam exhibited excellent elasticity, which recovered to its originalheight even after300cycles. Furthermore, the mechanical performance of GO foamexhibited a good humidity sensitivity. The elastic modulus of porous GO structure wasderived based on Gibson honeycomb model. Finally the effects of structuralparameters on elastic modulus were studied.