fig7

Figure 7. (A) Schematic diagram of the role of IL interlayer between bulk LAGP and Li along with SEM images at low-magnification (a) and high-magnification (b) and cross sectional SEM images in low-magnification (c) and high-magnification (d) of cycled Li anode with LAGP-ILE interlayer. Lithium stripping/plating analysis showing interfacial stability of bulk LAGP pellet and Li anode with the presence of IL, and charge-discharge performance and rate capability of solid-state Li|LAGP |LiFePO₄ full cells with and without ILE interlayer. This figure is quoted with permission from Xiong et al.^[148]. (B) Li stripping/plating voltage profiles of symmetric Li|LLZO|Li cells with and without ILE conducted at 25 °C. This figure is quoted with permission from Pervez et al. This figure is quoted with permission from Pervez et al.^[150]. (C) Typical voltage profile during stripping of lithium in a Li|ILE|LLZO|Li_id cell (Li_id, ideal lithium electrode prepared with 380 MPa pressure) in which IL mixture was applied to only one side. Cross-sectional images were obtained via cryo FIB-SEM to assess the morphology of the interfaces at different stages while stripping. Cross-sectional SEM images of the IL mixture|LLZO and Li|IL mixture interfaces (b-d) in an as-built Li|ILE|LLZO|Li_id, (e and f) after stripping of Li but before cell failure, and (g and h) after intentional cell failure by a steep increase in voltage. Voltage profiles of two different cells over time during pressure less stripping at a current density of 100 μAcm^-2. The bottom part of the Figure displays the corresponding resistance evolution. This figure is quoted with permission from Fuchs et al.^[153].