2: TiO 2-supported and carbon-immobilized TiO 2/SnO 2/C composite towards improved lithium storage]]>

摘要

AbstractWith a much higher theoretical capacity than that of graphite anodes, SnO2has attained great attention as a potential anode material for next-generation lithium-ion batteries. However, it's practical application yet be impeded by such disadvantages of poor conductivity and terrible structure stability during repeated discharge/charge process. Herein, a unique TiO2/SnO2/C hybrid (TiO2SS@SnO2@C) consist of one-dimensional TiO2nanobelts, zero-dimensional SnO2nanoparticles and conformal carbon coating has been fabricated based on a strategy of synergistic effect of components with different dimensional nanostructures, which can provide improved electrochemical kinetic and outstanding structure stability for the TiO2SS@SnO2@C. As a result, the TiO2SS@SnO2@C is able to exhibit outstanding lithium storage performance as an anode material, delivering capacities of 904.9 and 492.4?mAhh?g?1after even 400 cycles at 200 and even 1000?mA?g?1, respectively. It is demonstrated that the synergistic effect of these components is responsible for thus outstanding electrochemical performance.Highlights?A robust strategy for stabilizing SnO2structure was proposed.?A novel hetero-nanostructure of TiO2/SnO2/C composite was smartly fabricated.?The synergistic effect of components was demonstrated.?The as-fabricated TiO2/SnO2/C exhibited outstanding lithium storage and cycling performance.]]>