Al2O3-modified Ti–Mn–O nanocomposite coated with nitrogen-doped carbon as anode material for high power lithium-ion battery

Abstract

Al₂O₃-modified Ti–Mn–O nanocomposite with nitrogen-doped carbon coating is fabricated using metal chlorides as precursors and acrylonitrile as carbon source. The composite acting as anode material for lithium-ion batteries exhibits a reversible capacity of 420.7 mA h g⁻¹ after cycling 100 times at a current density of 100 mA g⁻¹ and excellent rate capabilities. The enhanced electrochemical performance results from synergistic compositing effect of TiO₂ and MnO/MnTiO₃ with a small amount of Al₂O₃, combining the high capacities of MnO/MnTiO₃, the structural stability of TiO₂ with the dispersion effect and buffer function of Al₂O₃.