High-Yield Continuous-Flow Synthesis of Spheroidal C@Graphene Composites as Supercapacitors.

Graphene spheres confining fullerene C are quantitatively formed under high-shear and continuous-flow processing using a vortex fluidic device (VFD). This involves intense micromixing a colloidal suspension of graphite in DMF and an -xylene solution of C at room temperature in the absence of surfactants and other auxiliary substances. The diameters of the composite spheres, C@graphene, can be controlled with size distributions ranging from 1.