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From: Self-limited atomic-layer tin-sulfides with high-electron-intensity interface induced ultrathin SEI for fast-charging sodium-ion batteries

Self-limited atomic-layer tin-sulfides with high-electron-intensity interface induced ultrathin SEI for fast-charging sodium-ion batteries

Figure 1. The structural characterization of 1L-SnS₂/Gr, 2L-SnS₂/Gr, 3L-SnS₂/Gr. (A) Synchrotron high-pressure powder XRD pattern of 1L-SnS₂/Gr, 2L-SnS₂/Gr and 3L-SnS₂/Gr; (B) SEM images of 1L-SnS₂/Gr; (C) TEM image of 1L-SnS₂/Gr; (D) AFM images and height profiles of 1L-SnS₂/Gr; (E) 2L-SnS₂/Gr; (F) 3L-SnS₂/Gr; (G and H) AC-HRTEM images of 3L-SnS₂/Gr at different magnifications. Inset in G is EELS image; (I) Elemental mapping image of 3L-SnS₂/Gr. XRD: X-ray powder diffraction; SEM: scanning electron microscopy; TEM: transmission electron microscopy; AFM: atomic force microscopy; AC-HRTEM: aberration-corrected high-resolution transmission electron microscopy; EELS: electron energy loss spectroscopy.