Fe3O4-nanoparticle-decorated TiO2 nanofiber hierarchical heterostructures with improved lithium-ion battery performance over wide temperature range

A facile strategy was designed for the fabrication of Fe3O4-nanoparticle- decorated TiO2 nanofiber hierarchical heterostructures （FTHs） by combining the versatility of the electrospinning technique and the hydrothermal growth method. The hierarchical architecture of Fe3O4 nanoparticles decorated on TiO2 nanofibers enables the successful integration of the binary composite into batteries to address structural stability and low capacity. In the resulting unique architecture of FTHs, the 1D heterostructures relieve the strain caused by severe volume changes of Fe3O4 during numerous charge-discharge cycles, and thus suppress the degradation of the electrode material. As a result, FTHs show excellent performance including higher reversible capacity, excellent cycle life, and good rate performance over a wide temperature range owing to the synergistic effect of the binary composition of TiO2 and Fe304 and the unique features of the hierarchical nanofibers.

灵巧的策略为 Fe 的制造被设计<潜水艇class=“ a-plus-plus ”> 3 O <潜水艇class=“ a-plus-plus ”> 4 -nanoparticle-decorated TiO <潜水艇class=“ a-plus-plus ”> 2 nanofiber 由联合 electrospinning 技术的通用性的层次 heterostructures ( FTH )并且热水的生长方法。Fe 的层次建筑学 < 潜水艇 class= “ a-plus-plus ” > 3 O < 潜水艇 class= “ a-plus-plus ” >在 TiO 上装饰的 4 nanoparticles <潜水艇class=“ a-plus-plus ”> 2 nanofibers 启用进电池合成的二进制代码的成功的集成到地址结构的稳定性和低能力。在结果 FTH 的唯一的建筑学， 1D heterostructures 减轻 Fe 的严重的卷变化引起的紧张 < 潜水艇 class= “ a-plus-plus ” > 3 O < 潜水艇 class= “ a-plus-plus ” > 4 在众多的费用分泌物周期期间，并且这样压制电极材料的降级。作为结果， FTH 包括更高可逆的能力显示出优秀性能，优秀周期生活，并且在由于 TiO 的二进制作文的 synergistic 效果的一个宽温度范围上的好率性能<潜水艇class=“ a-plus-plus ”> 2 和 Fe <潜水艇class=“ a-plus-plus ”> 3 O <潜水艇class=“ a-plus-plus ”> 4 和唯一的特征层次 nanofibers 。