Wang Hongxing, Liu Lantao, Pang Weiwei, Li Yiming, Sun Ziyu, Zhang Zhigang, Chen Xiaohong, Song Huaihe
State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, P. R. China.
ACS Appl Mater Interfaces. 2024 Sep 4;16(35):46302-46311. doi: 10.1021/acsami.4c09002. Epub 2024 Aug 23.
Zinc metal batteries have recently emerged as a promising stable and reversible anode aqueous battery. However, due to the serious dendrite problem and hydrogen evolution problem of the zinc metal anode, the practical application of the zinc metal battery is limited. Here, we propose YO as an effective coating, which inhibits hydrogen evolution and side reactions by physical isolation and simultaneously prevents dendrite growth by ensuring a uniform Zn-ion flux and fast transport channels generated by Maxwell-Wagner polarization, thus improving the stability of batteries. Meanwhile, in situ/ex situ characterizations and different simulations are conducted to investigate in detail the effect of Maxwell-Wagner polarization on the performance of Zn metal batteries. The symmetric YO@Zn anode system exhibits a stable electroplating/stripping performance over 780 h and enables the Zn battery to achieve a Coulombic efficiency of up to 99.81% over 1000 cycles by reducing side reactions. The YO@Zn||MnO full cell delivers a high energy density of 301.42 Wh kg at a power density of 205.04 W kg. The work provides insights into the reversibility and stability of zinc anodes and provides a promising way to promote the practical application of Zn metal batteries.
锌金属电池最近已成为一种有前景的稳定且可逆的水系阳极电池。然而，由于锌金属阳极存在严重的枝晶问题和析氢问题，锌金属电池的实际应用受到限制。在此，我们提出将YO作为一种有效的涂层，它通过物理隔离抑制析氢和副反应，同时通过确保均匀的锌离子通量和由麦克斯韦-瓦格纳极化产生的快速传输通道来防止枝晶生长，从而提高电池的稳定性。同时，进行了原位/非原位表征和不同的模拟，以详细研究麦克斯韦-瓦格纳极化对锌金属电池性能的影响。对称的YO@Zn阳极系统在780小时内表现出稳定的电镀/剥离性能，并通过减少副反应使锌电池在1000次循环中实现高达99.81%的库仑效率。YO@Zn||MnO全电池在功率密度为205.04 W kg时可提供301.42 Wh kg的高能量密度。这项工作为锌阳极的可逆性和稳定性提供了见解，并为促进锌金属电池的实际应用提供了一条有前景的途径。
