In-situ reduction synthesis of one dimensional hybrid porous TiO@C anode for high-performance Li-ion storage

Recently, due to its advantages of inherent stability, non-toxicity, robustness, TiO₂ has been used for the anode of lithium ion batteries (LIBs). Compared with TiO₂, TiO has not only the above advantages of TiO₂, but also a significantly better conductivity. However, on account of serious particle agglomeration, harsh and complex synthesis conditions, it is rarely reported as an electrode material. Hence, in this paper, we artfully develop an unique and facile synthetic route for the TiO/C hybrid nanotubes via the in-situ carbon reduction technology, where the TiO nanoparticles are embedded in carbon matrix. As the anode for LIBs, the hybrid porous TiO@C anode with a stable structure in the electrochemical reaction process, shows the high reversible capacity of 306 mA h g⁻¹ at 0.2 A g⁻¹ after 250 cycles, along with good rate capability and cycle performance. Meanwhile, the superior electrochemical properties of the electrode are attributed to the one-dimensional hybrid porous nanostructure that can prevent particle agglomeration and increase electrical conductivity.