Developing nanomaterials with synergistic effects of various structural merits is considered to be an effective strategy to improve the sluggish ion kinetics and severe structural degradation of sodium-ion battery (SIB) anodes. Herein, honeycomb-like amorphous Zn2 V2 O7 (ZVO-AH) nanofibers as SIBs anode material with plentiful defective sites, complex cavities, and good mechanical flexibility are reported. The fabrication strategy relies on the expansive and volatile nature of the organic vanadium source, based on a simple electrospinning with subsequent calcination. Originating from the synergies of amorphous nature and honeycomb-like cavities, ZVO-AH shows increased electrochemical activity, accelerated Na-ion diffusion, and robust structure. Impressively, the ZVO-AH anode delivers superior cycle stability (112% retention at 5 A g-1 after 5000 cycles) and high rate capability (150 mAh g-1 at 10 A g-1 ). The synthetic versatility is able to synergistically promote the practical application of more potential materials in sodium-ion storage.

中文翻译：

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一维蜂窝状无定形锌钒酸盐，用于稳定，快速的钠离子存储。

开发具有各种结构优点的协同效应的纳米材料被认为是改善钠离子电池（SIB）阳极的缓慢离子动力学和严重结构降解的有效策略。在本文中，报道了蜂窝状非晶态Zn 2 V 2 O 7（ZVO-AH）纳米纤维作为SIB阳极材料，具有大量缺陷部位，复杂的空洞和良好的机械柔韧性。基于简单的电纺丝和随后的煅烧，制造策略依赖于有机钒源的膨胀性和挥发性。ZVO-AH源自无定形性质和蜂窝状空腔的协同作用，显示出增强的电化学活性，加速的Na离子扩散和坚固的结构。令人印象深刻 ZVO-AH阳极具有出色的循环稳定性（5000次循环后在5 A g-1下保持112％的保留）和高倍率容量（在10 A g-1下为150 mAh g-1）。合成的多功能性能够协同促进更多潜在材料在钠离子存储中的实际应用。