One-step facile synthesis of TiO2/Fe2O3 fiber-in-tube hierarchical heterostructures with improved lithium-ion battery performance

摘要: We demonstrate a simple, efficient, yet versatile strategy for the synthesis of novel TiO2/Fe2O3 fiber-in-tube hierarchical heterostructures by using simple electrospinning technique and subsequent annealing. The mechanism formation these controllable structures is investigated. When tested as anode materials in lithium-ion batteries (LIBs), not only deliver high reversible capacity 987.2 mA h g−1, which almost quadruple that pure TiO2 nanofibers, 65.1% retention over 240 cycles, but also show excellent rate capability due to synergetic effect between Fe2O3 well unique features.