fig1

Figure 1. (A) Surface SEM image of LLZO prepared by the solvent-free method, (B) Surface SEM image of LLZO prepared by the solid-state synthesis method, and the insets in Figure 1A and B show the corresponding particle-size distribution histograms obtained from SEM image analysis. Cross-sectional SEM images of (C) SPE-blank, (D) CSPE-15 dry-LLZO, and (E) CSPE-15 wet-LLZO. SEM: Scanning electron microscopy; LLZO: Li_6.4Ga_0.2La₃Zr₂O₁₂.