Heterostructured Fe₂O₃/Fe₇S₈ hollow fibers were rationally designed and synthesized via the electrospinning technique, followed by a calcination process and sulfuration treatment. Benefitting from the synergistic effect of the hollow structure and the built-in electric field induced by the heterostructure, the as-prepared Fe₂O₃/Fe₇S₈ composite anode exhibits high specific capacity (947 mA h g⁻¹ after 100 cycles at 0.2 A g⁻¹), excellent rate capability, and long-term cycling stability (730 mA h g⁻¹ after 1000 cycles at 1 A g⁻¹).

中文翻译：

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构建异质结构 Fe2O3/Fe7S8 中空纤维以提高锂存储的电化学动力学

采用静电纺丝技术合理设计合成了异质结构Fe ₂ O ₃ /Fe ₇ S ₈中空纤维，并进行煅烧和硫化处理。受益于中空结构和异质结构诱导的内建电场的协同效应，所制备的Fe ₂ O ₃ /Fe ₇ S ₈复合阳极表现出高比容量（在100次循环后为947 mA hg ^-1 ） 0.2 A g ^-1），优异的倍率性能和长期循环稳定性（1 A g -1 循环1000次后为730 mA ^hg -1 ^）。