fig7

Figure 7. (A) Schematic diagram of NCF@CeO₂ preparation by electrospinning; (B) HRTEM NCF@CeO₂ morphology. The figures are quoted with permission from Wen et al.^[122]; (C) Migration path of Li₂S₂ on the surface of CeO₂ (111). This figure is quoted with permission from Yu et al.^[124]; (D) Schematic illustration of KB@CeO₂-C preparation process. This figure is quoted with permission from Zhang et al.^[125]; (E) HRTEM image of bi-Sm₂O₃; (F) Schematic diagram of polysulfide species conversion to Li₂S enhanced by Bi- Sm₂O₃. The figures are quoted with permission from Lai et al.^[126]; (G)TEM image of Y₂O₃. The figures are quoted with permission from Qiao et al.^[127]; (H) HRTEM image of CeO₂/Co/carbon nanotube; (I) Schematic illustration of enhanced mechanism by CeO₂/Co/CNT-PP separator. The Figures are quoted with permission from Zhang et al.^[128]; (J) Schematic illustration of Co-N-C@CeO₂-C preparation process. This figure is quoted with permission from Jin et al.^[129]; (K) EDS mapping of LaCoO₃; (L) Optimized structures of different polysulfide species adsorption on LaCoO₃ and calculated adsorption energy. The figures are quoted with permission from Wang et al.^[130]. MOF: Metal-organic framework; NCF@CeO₂: nitrogen-doped carbon fibers based on cerium dioxide spheres; HRTEM: high-resolution transmission electron microscopy; KB: Ketjen Black; CNT: carbon nanotube; PP: polypropylene; EDS: energy-dispersive X-ray spectroscopy.