Few-layer TiO2–B nanosheets with N-doped graphene nanosheets as a highly robust anode for lithium-ion batteries

Abstract

We used a hydrothermal method to fabricate a N-doped TiO₂–bronze/N-doped graphene nanocomposite (N-TiO₂–B/NG). X-ray photoelectron spectroscopy confirmed that the nitrogen was successfully doped in the TiO₂–B and graphene sheets. The N-TiO₂–B/NG nanocomposites exhibited a high specific capacity, which was much higher than the capacities of pure TiO₂–B. Our materials has a high specific capacity of 583.3 mA h g⁻¹ in the first cycle, and at a high current density of 50C, the capacity was still as high as 153.3 mA h g⁻¹. The stable cycling performance and excellent rate characteristics indicate this material has a great potential for high power lithium ion batteries.