Electrospinning-enabled SiO @TiO2/C fibers as anode materials for lithium-ion batteries

In this paper, SiOx@TiO2/C fibers with TiO2/C composite layer were successfully prepared by one-step electrospinning. Carbon coating can enhance conductivity and act as bulk expansion buffer matrix, while TiO2 coating is beneficial to improving the mechanical stability of composite. Thus, a highly effective and stable conductive network is formed. Benefited from the protection of TiO2/C coating layer, SiOx@TiO2/C fibers demonstrates enhanced electrochemical performance. It exhibites an initial charge capacity of 1125.3 mAh g−1 at 0.1 A g−1, and a stable charge capacity of 855.0 mAh g−1 can be retained with a retention of 89.5% after 100 cycles at 0.4 A g−1, which is better than that of M-SiOx (32.3%) and SiOx@C (52.5%) materials. Moreover, SiOx@TiO2/C fibers show a high charge capacity of 640.4 mAh g−1 after 200 cycles cycled at a high current density of 1 A g−1.