Fig. 5: SEI composition.
From: Active learning accelerates electrolyte solvent screening for anode-free lithium metal batteries
a F 1 s XPS spectra of lithium metal SEI at different etching time. b O 1 s XPS spectra of lithium metal SEI at different etching time. Atomic ratio quantified from XPS with (c) no etching and (d) 3 minutes of etching.
