fig5

Figure 5. (A) Preparation process of LSC perovskite-based host for composite sulfur electrode; (B) Optimized Li₂S₄ adsorption structure on the surface of LaCoO₃ and LSC. The figures are quoted with permission from Hao et al.^[99] XPS tests before and after Li₂S₆ adsorption on LSFM (C) Mn 2p; (D) Sr 3d; (E) O 1s. The figures are quoted with permission from Jin et al.^[100]; (F) HETEM image of HE-LSMO. (G) Binding energy comparison of Li₂S₆ adsorption on the surface of LMO, HE-LMO, and HE-LSMO. The figures are quoted with permission from Tian et al.^[105]; (H) In-situ electrochemical Raman 2D spectra of HEZO-based sulfur electrode at different charge/discharge depths; (I) Actual utilization of Li₂S₄ in discharge process and charge process. The figures are quoted with permission from Zhou et al.^[106]. LSC: La_0.6Sr_0.4CoO_3-δ; XPS: X-ray photoelectron spectroscopy; LSFM: La_0.3Sr_0.7Fe_0.2Mn_0.8O₃; OCP: open circuit potential; HRTEM: high-resolution transmission electron microscopy; HE-LSMO: La_0.8Sr_0.2(Cr_0.2Mn_0.2Fe_0.2Co_0.2Ni_0.2O₃); HE-LMO: La(Cr_0.2Mn_0.2Fe_0.2Co_0.2Ni_0.2O₃); HEZO: (La_0.15Nd_0.15Sm_0.40Eu_0.15Gd_0.15)₂Zr₂O₇.