High-Yield Gas-Liquid Interfacial Synthesis of Highly Dispersed Fe3O4 Nanocrystals and Their Application in Lithium-Ion Batteries

A beaker-in-autoclave setup is designed for interfacial synthesis of Fe3O4 nanoparticles with precise size control. They exhibit superparamagnetic proper-ties and can be homogeneously incorporated into a carbon matrix to form Fe3O4@C composite, in which Fe3O4 remains highly dispersed in the solid state. The Fe3O4@C composites exhibit excellent cycling and rate performances as anode material for lithium-ion batteries.