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From: In-situ construction of artificial interface layer using sodiophilic Bi₂S₃ nanowires for dendritic-free sodium-metal batteries

<i>In-situ</i> construction of artificial interface layer using sodiophilic Bi<sub>2</sub>S<sub>3</sub> nanowires for dendritic-free sodium-metal batteries

Figure 2. (A) Initial CV curve and (B) GCD curves of Bi₂S₃; (C) XRD patterns of the discharged Bi₂S₃ electrodes at different states; (D) TEM image and (E) HRTEM image of sodiated Bi₂S₃ at initially discharged to 0.5 V, and (F) HAADF-STEM image with corresponding EDS maps of Bi/S/Na elements; (G) Sodium adsorption energies on Cu (111), Bi (001), Na₃Bi (001), Bi₂O₃ (001), Bi₂S₃ (110) and NaBiS₂ (110) surfaces, where more negative values imply stronger adsorption. CV: Cyclic voltammetry; GCD: Galvanostatic discharge; XRD: X-ray diffraction; TEM: transmission electron microscope; HRTEM: high-resolution transmission electron microscopy; HAADF-STEM: high-resolution transmission electron microscopy; EDS: energy dispersive X-ray spectroscopy.