Guo Dongfang, Li Fengyu, Zhang Bin
School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, 450001, China.
School of Physics and Laboratory of Zhongyuan Light, Zhengzhou University, Zhengzhou, 450001, China.
Adv Sci (Weinh). 2025 Mar;12(10):e2417323. doi: 10.1002/advs.202417323. Epub 2025 Jan 21.
Aqueous zinc ion batteries are often adversely affected by the poor stability of zinc metal anodes. Persistent water-induced side reactions and uncontrolled dendrite growth have seriously damaged the long-term service life of aqueous zinc ion batteries. In this paper, it is reported that a zinc sulfide with optimized electron arrangement on the surface of zinc anode is used to modify the zinc anode to achieve long-term cycle stability of zinc anode. The effective active sites of the zinc metal anode surface are first significantly improved by a simple ultrasound-assisted etching strategy, and then the in situ zinc sulfide interface phase further guides the zinc ion deposition behavior on the surface of the zinc metal anode. The zinc sulfide protective layer well regulates the interfacial electric field and the migration of Zn, thereby significantly promoting the homogenization of zinc ion flux to achieve dendrite-free deposition. In addition, the aqueous zinc ion full cell assembled based on ZnS@3D-Zn anode achieves better output performance in long-term cycles. In summary, this work sheds light on the importance of reasonable interfacial modification for the development of dendrite-free and stable zinc anode chemistry, which opens up a new path for promoting the development of zinc-based batteries.
水系锌离子电池常常受到锌金属负极稳定性差的不利影响。持续的水引发的副反应和不受控制的枝晶生长严重损害了水系锌离子电池的长期使用寿命。本文报道了一种在锌负极表面具有优化电子排布的硫化锌用于修饰锌负极，以实现锌负极的长期循环稳定性。首先通过简单的超声辅助蚀刻策略显著改善锌金属负极表面的有效活性位点，然后原位形成的硫化锌界面相进一步引导锌离子在锌金属负极表面的沉积行为。硫化锌保护层很好地调节了界面电场和锌的迁移，从而显著促进锌离子通量的均匀化以实现无枝晶沉积。此外，基于ZnS@3D-Zn负极组装的水系锌离子全电池在长期循环中实现了更好的输出性能。总之，这项工作揭示了合理的界面修饰对于开发无枝晶且稳定的锌负极化学的重要性，为推动锌基电池的发展开辟了一条新途径。
