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.