Abstract
Fe3O4/Fe2O3 composite hollow spheres were successfully synthesized by simply aging Fe3O4 nanospheres in a FeCl3 solution. A possible formation mechanism for the formation of the composite hollow spheres was suggested involving a coating combined with Kirkendall effect process. The Fe3O4/Fe2O3 composites possess ferromagnetic properties and excellent magnetic responsivity and redispersibility. The charge/discharge results indicated that the composites exhibit enhanced Li ion battery performance comparing with Fe3O4 nanospheres.
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