Li Runxia, Yu Xin, Bian Xiaofei, Hu Fang
School of Materials Science and Engineering, Dongguan University of Technology Dongguan 523808 China
School of Materials Science and Engineering, Shenyang University of Technology Shenyang 110870 China
RSC Adv. 2019 Oct 30;9(60):35117-35123. doi: 10.1039/c9ra07340j. eCollection 2019 Oct 28.
Rechargeable aqueous zinc ion batteries (ZIBs), owing to their low-cost zinc metal, high safety and nontoxic aqueous electrolyte, have the potential to accelerate the development of large-scale energy storage applications. However, the desired development is significantly restricted by cathode materials, which are hampered by the intense charge repulsion of bivalent Zn. Herein, the as-prepared VO(A) hollow spheres a feasible hydrothermal reaction exhibit superior zinc ion storage performance, large reversible capacity of 357 mA h g at 0.1 A g, high rate capability of 165 mA h g at 10 A g and good cycling stability with a capacity retention of 76% over 500 cycles at 5 A g. Our study not only provides the possibility of the practical application of ZIBs, but also brings a new prospect of designing high-performance cathode materials.
可充电水系锌离子电池（ZIBs）由于其低成本的锌金属、高安全性和无毒的水系电解质，有潜力加速大规模储能应用的发展。然而，这种理想的发展受到阴极材料的显著限制，二价锌的强烈电荷排斥阻碍了阴极材料的发展。在此，通过可行的水热反应制备的VO(A)空心球表现出优异的锌离子存储性能，在0.1 A g时具有357 mA h g的大可逆容量，在10 A g时具有165 mA h g的高倍率性能，并且在5 A g下500次循环中容量保持率为76%，具有良好的循环稳定性。我们的研究不仅为ZIBs的实际应用提供了可能性，也为设计高性能阴极材料带来了新的前景。
