Fig. 4: Li deposition morphology and interfacial chemistry of Li metal electrodes in different electrolytes. | Nature Communications

Fig. 4: Li deposition morphology and interfacial chemistry of Li metal electrodes in different electrolytes.

From: Flame-retardant electrolytes with electrochemically-inert and weakly coordinating dichloroalkane diluents for practical lithium metal batteries

Fig. 4: Li deposition morphology and interfacial chemistry of Li metal electrodes in different electrolytes.

Top-view SEM images of the surface morphology of Li plated on Cu foil with a current density of 0.5 mA cm-2 and an areal capacity of 3 mAh cm-2 in a LiFSI-TEP, b LiFSI-TEP/C3-2Cl, c LiFSI-TEP/C4-2Cl. The insets are optical images of the corresponding Li-plated Cu foils with a diameter of 1.6 cm. Cross-sectional SEM images of Li plated on Cu foil with a current density of 0.5 mA cm-2 and an areal capacity of 3 mAh cm-2 in d LiFSI-TEP, e LiFSI-TEP/C3-2Cl. f TOF-SIMS depth profiles and distributions of F-, C2HO-, LiCl- species on the surface of Li metal electrode after 50 cycles in different electrolytes. Cryo-TEM characterization of the morphology and thickness of the SEI layers formed on Li metal surface in g, h LiFSI-TEP/C3-2Cl and i LiFSI-TEP. Source data are provided as a Source Data file.

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