Research on Regulating Zinc Trifluoromethane Sulfonate Electrolyte to Stabilize Zinc Negative Electrode

Zinc anode plays an important role in energy storage systems such as aqueous zinc ion batteries, but the problems of dendrite growth, corrosion, and passivation faced by zinc anode seriously restrict the performance and service life of the battery. In recent years, research on stabilizing zinc negative electrodes by regulating zinc trifluoromethanesulfonate electrolyte has become a hot topic, providing new ideas and methods for solving zinc negative electrode related problems.  

Researchers have found that adjusting the composition and concentration of zinc trifluoromethanesulfonate electrolyte can effectively improve the performance of zinc negative electrodes. Adjusting the concentration of zinc trifluoromethanesulfonate appropriately can optimize the solvation structure of zinc ions in the electrolyte and change the deposition behavior of zinc ions on the negative electrode surface. When the concentration of zinc trifluoromethanesulfonate in the electrolyte is within an appropriate range, zinc ions can deposit more uniformly on the surface of the zinc negative electrode, inhibiting the growth of zinc dendrites and allowing the zinc negative electrode to maintain a flat surface morphology after multiple charge and discharge cycles.  

In addition, adding specific additives to the zinc trifluoromethanesulfonate electrolyte is also an effective means of stabilizing the zinc negative electrode. These additives can form a stable solid electrolyte interface (SEI) film on the surface of the zinc negative electrode, which has good ion conductivity and electronic insulation properties. It allows zinc ions to smoothly pass through deposition and dissolution reactions, while preventing direct contact between the electrolyte and the zinc negative electrode, thereby reducing the corrosion and passivation of the electrolyte on the zinc negative electrode and improving its cycling stability and safety. With the continuous deepening of research on the regulation of zinc trifluoromethanesulfonate electrolyte, it is expected to achieve long-term stable operation of zinc negative electrode in the future, promoting the Large-scale application of energy storage technologies such as aqueous zinc ion batteries.