Facile Synthesis of SnO₂/Fe₂O₃ Hollow Spheres and their Application as Anode Materials in Lithium‐ion Batteries

Abstract

Abstract Hierarchical SnO 2 /Fe 2 O 3 hollow spheres are fabricated through the solvothermal method accompanied by a facile solution procedure in the absence of any surfactant. The composition, crystalline structure, morphology, and electrochemical properties of the synthesized product are investigated systematically. The SnO 2 /Fe 2 O 3 as an anode material in Li‐ion batteries demonstrates a better reversible capacity and very good rate capability and cyclic performance compared with pure‐phase SnO 2 hollow spheres. The greatly enhanced Li‐ion storage capability of the SnO 2 /Fe 2 O 3 hollow spheres is believed to result from the synergy of the two materials, SnO 2 and Fe 2 O 3 , which provides breathable aggregates for effective buffering of the drastic volume changes during the charge/discharge process. This work reports a promising method for the design and preparation of nanocomposite electrodes for Li‐ion batteries.