Mangosteen-like heterogeneous core-shell structured Mn2O3/Fe2O3 as anode material for high-performance lithium-ion batteries

Transition metal oxides with high capacity are considered ideal materials for anodes in lithium-ion batteries. In this study, nanospheres are prepared as a precursor with MnO _X coated Fe ₃O ₄ by solvothermal method, and the Mn ₂O ₃/Fe ₂O ₃ composite with the mangosteen-like heterogeneous core-shell structure is formed by annealing method. During charging and discharging, the volume expansion is effectively alleviated by a mangosteen-like hollow structure. The heterogeneous Mn ₂O ₃/Fe ₂O ₃ composite with core-shell structure exhibits excellent electrochemical properties and recall ability. In the 0.01–2.5 V range, the capacity is 1042 mA h g ⁻¹ at 0.1 A g ⁻¹ after 280 cycles and 912.8 mA h g ⁻¹ at 0.5 A g ⁻¹ after 1400 cycles. In the 0.01–3 V range, a capacity is 957.5 mA h g ⁻¹ at 1.0 A g ⁻¹ after 550 cycles.