Vanadium pentoxide (V₂O₅) materials show great promise in rechargeable aqueous zinc ion batteries (ZIBs) from its outstanding theoretical capacity. Limited to the poor electronic conductivity and sluggish ionic diffusion kinetics, most of the V₂O₅-based cathodes exhibit unsatisfactory specific capacity and short lifespan. Herein, V₂O₅/graphene oxide composite (V₂O₅/GO)，which V₂O₅ nanoparticles in-situ grow on GO plates, are facile synthesized as cathodes for ZIBs. The V₂O₅/GO heterojunctions have a continuous electron transfer pathways and abundant Zn²⁺ insertion active sites, a capacitive-controlled kinetics, and an improved hydrophilicity. As a result, this V₂O₅/GO-ZIBs display an admirable capacity of 525 mAh g⁻¹ at 0.1 A g⁻¹, remarkable rate capability of 114 mAh g⁻¹ at 40 A g⁻¹, long lifespan up to 10,000 cycles at 20 A g⁻¹ with 90.8% retention, extreme-fast charging ability of 12.8 s at 40 A g⁻¹, greatly outperform most of reported ZIBs. Therefore, this work may guide the commercial application of ZIBs based on the superior performance and the simple synthesis approach.

五氧化二钒（V ₂ O ₅）材料因其出色的理论容量而在可再充电的水性锌离子电池（ZIBs）中显示出广阔的前景。由于不良的电子电导率和缓慢的离子扩散动力学，大多数基于V ₂ O ₅的阴极表现出不令人满意的比容量和较短的寿命。在此，可以容易地合成V ₂ O ₅纳米颗粒在GO板上原位生长的V ₂ O ₅ /氧化石墨烯复合物（V ₂ O ₅ / GO），作为ZIBs的阴极。V ₂ O ₅/ GO异质结具有连续的电子传输路径和丰富的Zn ²⁺插入活性位点，具有电容控制的动力学特性，并具有改善的亲水性。结果，该V ₂ O ₅ / GO-ZIBs在0.1 A g ^-1时显示出525 mAh g ^-1的令人称赞的容量，在40 A g ^-1时显示出114 mAh g ^-1的显着速率能力，寿命长达20 A g ^-1下10,000次循环，保留90.8％，40 A g ^-1下12.8 s的极快充电能力，大大胜过大多数报告的ZIB。因此，这项工作可以基于优异的性能和简单的合成方法来指导ZIBs的商业应用。