Controllable Synthesis of 3D Hollow-Carbon-Spheres/Graphene-Flake Hybrid Nanostructures from Polymer Nanocomposite by Self-Assembly and Feasibility for Lithium-Ion Batteries

Abstract

3D hollow-carbon-spheres/graphene-flake hybrid nanostructures are controllably prepared from a polypropylene/montmorillonite/Fe3O4 composite by a self-assembly and subsequent carbonization process. More importantly, in the resultant hollow-carbon-spheres/graphene-flake hybrid structures, the monodispersed small hollow carbon spheres can be distributed on the graphene flake with controllable density. The obtained hollow-carbon-spheres/graphene-flake hybrid nanostructures show improved performance in lithium-ion batteries.