Sb and Sb₂O₃ are attractive anode materials for sodium ion batteries due to their relatively low cost and high theoretical capacity. However, the poor cycling stability caused by serious volume expansion hinders their development. In this work, we use electrospinning and carbon thermal reduction to easily synthesize Sb/Sb₂O₃@N-doped carbon nanofiber membranes. The flexible Sb/Sb₂O₃@NCNF membranes are directly used as free-standing electrodes in SIBs showing a high specific capacity and excellent cycling stability (527.3 mA h g⁻¹ after 100 cycles at 0.1 A g⁻¹). They can still deliver a reversible specific capacity around 400 mA h g⁻¹ after 700 cycles even at 1 A g⁻¹. The flexible free-standing design, simple synthesis methods and excellent electrochemical properties make the Sb/Sb₂O₃@NCNF electrodes an ideal anode candidate material for sodium ion batteries.

中文翻译：

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用于钠离子电池的高柔韧性自支撑Sb / Sb2O3 @ N掺杂碳纳米纤维膜，具有出色的稳定性

Sb和Sb ₂ O ₃由于其相对较低的成本和较高的理论容量而成为用于钠离子电池的有吸引力的负极材料。然而，由于严重的体积膨胀而导致的差的循环稳定性阻碍了它们的发展。在这项工作中，我们使用静电纺丝和碳热还原来轻松合成Sb / Sb ₂ O ₃ @N掺杂的碳纳米纤维膜。柔性的Sb /锑₂ ö ₃ @NCNF膜直接用作SIB的自由站立的电极显示出高的比容量和优异的循环稳定性（527.3毫安汞柱^-1在0.1 A克100次循环后^-1）。它们仍可提供约400 mA hg的可逆比容量700次循环后^-1，即使在1 A g ^-1。灵活的独立式设计，简单的合成方法和出色的电化学性能，使Sb / Sb ₂ O ₃ @NCNF电极成为钠离子电池的理想阳极候选材料。