Abstract Hollow bismuth ferrite nanofibers were fabricated via simple electrospinning process, and the storage properties of Na-ions were investigated by atmospheric pressure X-ray photoelectron spectrum (APXPS) and Synchrotron Radiation. The results show that the hollow bismuth ferrite nanotubes demonstrate impressive sodium storage properties and good cycling stability that the specific capacity can exceed 500 mA h g-1 and the cycle number reaches several hundred cycles. The graphene-coated bismuth ferrite nanotubes exhibit a specific capacity of 600 mAhg-1and a 89% capacity retention after 200 cycles. The present strategy can be a significant step to fabricate hollow perovskite oxides and serve as sodium ion batteries.

中文翻译：

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中空铁氧体铋复合石墨烯作为钠离子电池先进负极材料

摘要 通过简单的静电纺丝工艺制备了中空铋铁氧体纳米纤维，并通过常压X射线光电子能谱（APXPS）和同步辐射研究了钠离子的存储性能。结果表明，空心铋铁氧体纳米管表现出令人印象深刻的储钠性能和良好的循环稳定性，比容量可超过500 mAh g-1，循环次数达到数百次。石墨烯包覆的铁氧体铋纳米管表现出600 mAhg-1的比容量和200次循环后89%的容量保持率。目前的策略可能是制造空心钙钛矿氧化物并用作钠离子电池的重要一步。