Facile synthesis of Mn-doped hollow Fe2O3 nanospheres coated with polypyrrole as anodes for high-performance lithium-ion batteries

Abstract

Mn-doped Fe₂O₃/PPy hollow composite nanospheres were fabricated by a facile solvothermal method. The Mn–Fe₂O₃/PPy electrode showed an improved electrochemical performance in terms of high rate capability and long cycling performance compared with Fe₂O₃ without Mn doping and PPy coating. At current densities of 500 mA g⁻¹ and 1000 mA g⁻¹, the Mn–Fe₂O₃/PPy exhibited an initial capacity of 1214.7 and 924.9 mA h g⁻¹, and the capacity was maintained at 795.7 and 643.6 mA h g⁻¹ after 200 cycles.