Hierarchical hollow spheres of Fe2 O3 @polyaniline are fabricated by template-free synthesis of iron oxides followed by a post in- and exterior construction. A combination of large surface area with porous structure, fast ion/electron transport, and mechanical integrity renders this material attractive as a lithium-ion anode, showing superior rate capability and cycling performance.
Keywords: Composites; Conducting polymer; Iron oxide; Lithium ion battery; hierarchical structure.
© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.