Due to their nontoxicity, low cost, and high capacity, aqueous zinc-ion batteries (AZIBs) have been the subject of substantial research and are considered a viable replacement for lithium-ion batteries (LIBs). However, AZIB cathodes suffer from dissolution and structural collapse during charging and discharging, which severely limits their use. By the in-situ compounding of V₂O₃ and carbon nanotubes, we developed a unique composite cathode material (V₂O₃/CNT) to provide oxygen vacancies in the cathode in AZIB, and have achieved a remarkable electrochemical performance (211.6 mAh g⁻¹ after 2000 cycles at 5 A g⁻¹). The V₂O₃/CNT can maintain a capacity of 137.3 mAh g^-1 with a large current density of 10 A g^-1 after 4000 cycles. A combination of ex-situ XRD and other characterization techniques revealed that the superior zinc storage of V₂O₃/CNT is primarily due to its ultra-stable structure, oxygen-rich defects, and H⁺/Zn²⁺ co-intercalation mechanism. The in-situ manufacture of oxygen-defective-rich vanadium oxide on carbon nanotubes may be an efficient approach to creating high-performance AZIBs cathode materials.

由于无毒、低成本和高容量，水系锌离子电池 (AZIB) 一直是大量研究的主题，并被认为是锂离子电池 (LIB) 的可行替代品。然而，AZIB正极在充电和放电过程中会发生溶解和结构坍塌，严重限制了它们的使用。_{通过V 2} O ₃和碳纳米管的原位复合，我们开发了一种独特的复合正极材料（V ₂ O ₃ /CNT），为AZIB正极提供氧空位，并取得了卓越的电化学性能（211.6 mAh g ^-1在 5 A g ^-1下 2000 次循环后。V ₂ O ₃^{/CNT在4000次循环后可保持137.3 mAh g -1}的容量，10 A g ^-1的大电流密度。结合非原位 XRD 和其他表征技术表明，V ₂ O ₃ /CNT 的优异锌储存主要归因于其超稳定结构、富氧缺陷和 H ⁺ /Zn ²⁺共嵌入机制. 在碳纳米管上原位制造缺氧富钒氧化物可能是制造高性能 AZIBs 正极材料的有效途径。