Fig.1

(a) cross-sectional HAADF TEM images of the interface between the LiCoO2 electrode and the Li2S-P2S5 solid electrolyte; (b) magnified image of the area described by the square in a after the initial charging; (c) Cross-sectional HAADF-STEM image and (d) the corresponding EDX mapping for the Co element after initial charging[12] "

Fig.2

(a) Schematic illustration of the mictostructure for TiS2 and Li2S-P2S5 composite cathode; (b) The high-resolution TEM image of the as-obtained TiS2 and Li2S-P2S5 composite cathode prepared by ball-milling[22] "

Fig.3

(a) Schematic of typical all-solid-state lithium battery based LiCoO2 cathode and sulfide electrolyte coated LiCoO2 cathode; (b) Cross-sectional high-angle annular dark field (HAADF) TEM images and EDX mappings of sulfide electrolyte coated LiCoO2 cathode[27] "

Fig.4

Schematic for the synthesis strategy of Co9S8, Co9S8@Li7P3S11 nanocomposites, and neat Li7P3S11electrolyte [41] "

Fig.5

(a) Schematic illustration of the synthesis process of NiS-CNT nanocomposites, and (b) the electron and lithium ion transport pathways in NiS-CNTs/sulfide solid electrolytes[47]. SEM images of the cross-section of (c), (d) MoS3 nanoparticles and (e), (f) rGO-MoS3 nanocomposites before and after 100 charge/discharge cycles, respectively[48] "

Fig.6

Types of interfaces between lithium metal and solid electrolyte[52] "

Fig.7

(a) Schematic representation of interfacial phenomena between the sulfide solid electrolytes and the Li metal anode[53]; (b) Schematic of the interphase formation at the Li/Li10GeP2S12 interface[54]; (c) Time-dependence of the ionic resistance and the electronic resistance of the interfacial decomposition layer[55] "

Fig.8

(a) Schematic diagram of the Li salt-based organic-inorganic nanocompositeas an interfacial protective layer for stabilizing the Li/LGPS interface[69]; (b)Schematic diagram of all-solid-state lithium batteries with the PCE interlayer[70] "