Li4Ti5O12-TiO2 composite anode material for lithium-ion batteries

► Dual-phase Li4Ti5O12-TiO2 was in situ prepared by a solvothermal route. ► TiO2 can prevent the grain growth and particle aggregation of Li4Ti5O12 phase. ► Li4Ti5O12-TiO2 powder displays high specific capacity and good cycling performance. ► Carbon coated Li4Ti5O12-TiO2 exhibits an excellent rate-capability.