Li Yaotong, Zhao Chunru, Abdukader Abdukayum, Wu Xiang
School of Materials Science and Engineering, Shenyang University of Technology Shenyang 110870 P. R. China
Xinjiang Key Laboratory of Novel Functional Materials Chemistry, College of Chemistry and Environmental Sciences, Kashi University Kashi 844000 P. R. China
RSC Adv. 2024 Mar 21;14(14):9594-9601. doi: 10.1039/d4ra01916d. eCollection 2024 Mar 20.
Aqueous zinc ion batteries (AZIBs) have been widely investigated due to their characteristics of convenient operation and intrinsic safety. However, there are several issues to be addressed in AZIBs, such as slow diffusion kinetics of Zn, cathode material dissolution and the dendrite formation of zinc anodes. Thus, it is challenging to prepare a high-performance cathode material. In this work, we prepare NHVO flower-like structures by a facile hydrothermal route. The introduction of chitosan significantly enlarges the layer spacing of the (001) crystal plane. The assembled Zn//NVO-0.15C batteries deliver a specific capacity of 520.54 mA h g at a current density of 0.2 A g. Furthermore, they maintain 91% of the retention rate at 5.0 A g after 1000 times cycling. It demonstrates the excellent zinc ion storage behavior of ammonium vanadate electrode materials for AZIBs.
水系锌离子电池（AZIBs）因其操作简便和本质安全的特点而受到广泛研究。然而，AZIBs仍存在一些问题需要解决，例如锌的扩散动力学缓慢、阴极材料溶解以及锌阳极的枝晶形成。因此，制备高性能的阴极材料具有挑战性。在这项工作中，我们通过简便的水热法制备了NHVO花状结构。壳聚糖的引入显著扩大了（001）晶面的层间距。组装的Zn//NVO-0.15C电池在0.2 A g的电流密度下具有520.54 mA h g的比容量。此外，在5.0 A g的电流密度下循环1000次后，它们保持了91%的保留率。这证明了钒酸铵电极材料在AZIBs中具有优异的锌离子存储性能。
