Facile Synthesis of Reduced Graphene Oxide In-situ Wrapped MnTiO₃ Nanoparticles for Excellent Lithium Storage

The stable high-capacity anode has been an urgent demand for high energy density lithium-ion batteries (LIBs). Herein, a simple and effective strategy to synthesize high-performance reduced graphene oxide (rGO) in-situ wrapped MnTiO 3 nanoparticles (MnTiO 3 @rGO) by Sol-Gel method is designed. The MnTiO 3 nanoparticles are uniformly dispersed and wrapped by few-layer graphene. Due to high conductivity of rGO, MnTiO 3 @rGO nanoparticles show excellent rate performance, with a specific capacity of 286 mAhg -1 being displayed at the higher rate of 5.0 Ag -1 . Moreover, benefited from porous structure and flexible rGO shell, the MnTiO 3 @rGO anode delivers a remarkable long-term cycling stability. The specific capacity maintains 441 mAhg -1 after 500 cycles at 0.5 Ag -1 , only losing 8.4%. Therefore, the results demonstrate that the facile synthetic strategy is highly desirable for improving the conductivity and stability of metal oxide anodes.