The compression mechanical properties of graphene aerogel

Graphene aerogel (GA) samples, prepared by the Sol-Gel method, were tested under quasi-static and dynamical compression, characterized via surface area analyzer scanning electron microscopy. The results show that drying method has a significant influence on sample’s microstructure as well its mechanical compression properties. supercritical CO2 dried sample notable higher specific area, strength; although freeze is much lighter than CO 2 sample, it exhibits nonlinear superelastic behavior large compressibility with reversible strain up to 94%; dynamic test, presents negative Poisson’s ratio whereas flower-like failure pattern was observed for sample. GA, therefore, promising candidate energy absorption purposes because of very low density, high porous microstructure.