Zhu Xinyan, Pan Liang, Peng Ziyu, Li Bin, Zhang Zekun, Zhao Ningning, Meng Wei, Dai Lei, Wang Ling, Zhu Jing, He Zhangxing
School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China.
School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China.
J Colloid Interface Sci. 2025 Jan;677(Pt A):1029-1036. doi: 10.1016/j.jcis.2024.08.010. Epub 2024 Aug 5.
Aqueous zinc ion batteries (AZIBs) have attracted much attention for their safety, low cost and high theoretical capacity. Nevertheless, Zn dendrites and the adverse reactions such as corrosion, hydrogen evolution and passivation on the anode affect the cycle life and stability of AZIBs. Herein, superabsorbent starch (SS) was employed on Zn foil to form an artificial interface protection layer, which inhibited the formation of dendrites by guiding the uniform deposition of Zn. SS with a large amount of oxygen-containing functional group is superabsorbent, which can attract the active water around the hydrated Zn, promoting the desolvation process of the hydrated Zn and significantly inhibiting the occurrence of hydrogen evolution reaction. In addition, the inherent pore structure of the SS artificial interfacial layer can induce uniform nucleation of Zn and inhibit the dendrites growth. Moreover, compared to bare Zn//MnO cell (44.1 %), the capacity retention of Zn@SS//MnO cell remained as high as 87.8 % after 1000 cycles at 1.5 A g. The simple method provided a new method for the rapid development of AZIBs.
水系锌离子电池（AZIBs）因其安全性、低成本和高理论容量而备受关注。然而，锌枝晶以及阳极上的腐蚀、析氢和钝化等不良反应会影响AZIBs的循环寿命和稳定性。在此，在锌箔上使用了高吸水性淀粉（SS）以形成人工界面保护层，该保护层通过引导锌的均匀沉积来抑制枝晶的形成。具有大量含氧官能团的SS具有高吸水性，它可以吸引水合锌周围的活性水，促进水合锌的去溶剂化过程，并显著抑制析氢反应的发生。此外，SS人工界面层的固有孔结构可以诱导锌的均匀成核并抑制枝晶生长。而且，与裸锌//MnO电池（44.1%）相比，Zn@SS//MnO电池在1.5 A g下经过1000次循环后容量保持率仍高达87.8%。这种简单的方法为AZIBs的快速发展提供了一种新方法。
