School of Chemistry and Chemical Engineering, Key Laboratory of New Low-carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning, 530004, P.R. China.
State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Xinjiang, 830046, P.R. China.
Adv Sci (Weinh). 2023 Feb;10(6):e2205874. doi: 10.1002/advs.202205874. Epub 2022 Dec 27.
The high Zn ion desolvation energy, sluggish Zn deposition kinetics, and top Zn plating pattern are the key challenges toward practical Zn anodes. Herein, these key issues are addressed by introducing zinc pyrovanadate (ZVO) as a solid zinc-ion conductor interface to induce smooth and fast Zn deposition underneath the layer. Electrochemical studies, computational analysis, and in situ observations reveal the boosted desolvation and deposition kinetics, and uniformity by ZVO interface. In addition, the anti-corrosion ability of Zn anodes is improved, resulting in high Zn stripping/plating reversibility. Consequently, the ZVO layer renders fast rechargeability and durable life in both Zn symmetric cells (1050 h at 10 mA cm , 1 mAh cm ) and Zn/V O batteries (79.1% capacity retention after 1000 cycles at 2 A g ) with low electrode polarization. This work provides insights into the design of solid zinc-ion conductor interface to enhance the interface stability and kinetics of Zn metal anodes.
高锌离子去溶剂化能、缓慢的锌沉积动力学和顶部锌电镀模式是实现实用锌阳极的关键挑战。在此，通过引入锌焦钒酸盐 (ZVO) 作为固体锌离子导体界面来解决这些关键问题，以在层下诱导平滑和快速的锌沉积。电化学研究、计算分析和原位观察揭示了 ZVO 界面增强的去溶剂化和沉积动力学以及均匀性。此外，锌阳极的耐腐蚀能力得到提高，从而实现了高的锌剥离/电镀可逆性。因此，ZVO 层使 Zn 对称电池（在 10 mA cm 下 1050 小时，1 mAh cm ）和 Zn/V O 电池（在 2 A g 下 1000 次循环后容量保持率为 79.1%）具有快速的可再充电性和耐用的寿命，电极极化较低。这项工作为设计固体锌离子导体界面提供了思路，以增强锌金属阳极的界面稳定性和动力学。
