Abstract：
Aqueous zinc-ion batteries (AZIBs) have attracted the attention of researchers because of their high theoretical capacity and safety. Among the many vanadium-based AZIB cathode materials, zinc vanadate is of great interest as a typical phase in the dis-/charge process. Here, a remarkable method to improve the utilization rate of zinc vanadate cathode materials is reported. In situ growth of Zn2 (V3 O8 )2 on carbon cloth (CC) as the cathode material (ZVO@CC) of AZIBs. Compared with the Zn2 (V3 O8 )2 cathode material bonded on titanium foil (ZVO@Ti), the specific capacity increases from 300 to 420 mAh g-1 , and the utilization rate of the material increases from 69.60% to 99.2%. After the flexible device is prepared, it shows the appropriate specific capacity (268.4 mAh g-1 at 0.1 A g-1 ) and high safety. The method proposed in this work improves the material utilization rate and enhances the energy density of AZIB and also has a certain reference for the other electrochemical energy storage devices.
摘要：
水性锌离子电池（AZIB）因其高理论容量和安全性而受到研究人员的关注。在众多的钒基AZIB正极材料中,钒酸锌作为放电/充电过程中的典型相引起了极大的兴趣。这里,报道了一种提高钒酸锌正极材料利用率的有效方法。在碳布（CC）上原位生长Zn2（V3O8）2作为AZIB的阴极材料（ZVO@CC）。与结合在钛箔（ZVO@Ti）上的Zn2（V3O8）2正极材料相比，比容量从300增加到420mAhg-1，材料利用率从69.60%提高到99.2%。在柔性装置准备好之后,它显示了适当的比容量（在0.1Ag-1时为268.4mAhg-1）和高安全性。本文提出的方法提高了材料利用率,增强了AZIB的能量密度,对其他电化学储能装置也有一定的借鉴意义。
