Fig. 5: Characterizations of SEIs. | Nature Communications

Fig. 5: Characterizations of SEIs.

From: Puzzle-like molecular assembly of non-flammable solid-state polymer electrolytes for safe and high-voltage lithium metal batteries

Fig. 5

a, b SEM images of the surface (a) and cross-section (b) of cycled LMAs collected from symmetrical Li||Li cells using PVEC. c, d SEM images of the surface (c) and cross-section (d) cycled LMAs from Li|IWSWN-SPE|Li cells. e, f Cryo-TEM images of deposited Li in the cell with the IWSWN-SPE. g Corresponding FFT pattern of the inner SEI. h EDS mappings of the surface of the deposited Li. i, j TOF-SIMS mappings of the LMAs in cycled Li||Li cells with the PVEC (i) and the IWSWN-SPE ( j). k, l Depth profiles of the LMAs in cycled Li||Li cells with the PVEC and IWSWN-SPE. m–o C 1 s (m), F 1 s (n), and P 2p (o) XPS spectra of the cycled LMAs in PVEC and IWSWN-SPE. p, q Organic C (p) and LiF (q) contents derived from XPS results of the cycled LMAs with PVEC and IWSWN-SPE. r, s Schematic of the different structures of SEI in PVEC (r) and IWSWN-SPE (s).

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