Fe-doped anatase TiO2/carbon composite as an anode with superior reversible capacity for lithium storage

Abstract

This paper reports an economic and effective wet chemistry process to prepare an Fe-doped anatase TiO₂/carbon composite with excellent performance in lithium-ion batteries. The as-prepared materials possess large BET specific area and high conductivity, owing to the existence of iron and carbon, which is conducive to electrolyte permeation and in favor of accelerating the electrochemical kinetics. When used as an anode material for advanced lithium storage, it leads to much better electrochemical performance than the pure TiO₂, delivering an initial discharge capacity of 381.7 mA h g⁻¹ with a drop of less than 1% from the 2^nd cycle to the 300^th cycle at a high current density of 10C (1C = 170 mA g⁻¹).