Modulating SEI Formation Tuning the Solvation Sheath for Lithium Metal Batteries

The solvation sheath of Li-glyme was modulated to enhance Li-TFSI association by adopting a highly polar solvent, especially water molecules, which affects the solid electrolyte interface (SEI) layer composition. By the Li-TFSI association, a TFSI anion-derived SEI layer is formed on the Li metal anode, resulting in higher Li metal anode efficiency.