Fig. 5: The SEI layer and its formation mechanism. | Nature Communications

Fig. 5: The SEI layer and its formation mechanism.

From: Neighboring alkenyl group participated ether-based electrolyte for wide-temperature lithium metal batteries

Fig. 5

a, b Cryo-TEM images of the SEI layer formed in the AE electrolyte at 25 °C and −40 °C, respectively. c Schematic presentation of the dual-layer SEI. d TOF-SIMS depth profiles of element fragments in SEI formed in AE electrolyte at −40 °C. e 3D variation of the TOF-SIMS intensity related to the corresponding element fragments. f The corresponding TOF-SIMS mass spectrum. g AIMD simulation of the dual-layer SEI formation process on the Li metal surface at −40 °C. Source data are provided as a Source Data file.

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