The origin of sulfuryl-containing components in SEI from sulfate additives for stable cycling of ultrathin lithium metal anodes

The trimethylene sulfate (TMS) was introduced to regulate Li deposition. The sulfuryl-containing components and increased content of Li2O were introduced into fluorinated SEI, further improving the homogeneity of solid electrolyte interphase and promoting uniform Li deposition in batteries under practical conditions.Image, graphical abstract