Yanan Zhang, Shenyu Shen, Kai Xi, Peng Li, Zihan Kang, Jianyun Zhao, Dandan Yin, Yaqiong Su, Hongyang Zhao, Guanjie He, Shujiang Ding
The instability of the solid electrolyte interface (SEI) is a critical challenge for the zinc metal anodes, leading to an erratic electrode/electrolyte interface and hydrogen evolution reaction (HER), ultimately resulting in anode failure. This study uncovers that the fluorine species dissolution is the root cause of SEI instability. To effectively suppress the F- dissolution, an introduction of low-polarity molecule, 1,4-thioxane (TX), is proposed, which reinforces the stability of the fluorine-rich SEI. Moreover, the TX molecule has a strong affinity for coordinating with Zn2+ and adsorbing at the electrode/electrolyte interface, thereby diminishing the activity of local water and consequently impeding SEI dissolution...
May 21, 2024: Angewandte Chemie