Fig. 2
From: Advanced sulfide solid electrolyte by core-shell structural design

Microstructural study on the morphology and composition of LSPS-Cl powders annealed at 450, 460, 480, and 500 °C. a SEM and b TEM images show their typical core-shell structures. c STEM EDS analyses of these samples show a continuously decreasing Si concentration and increasing S concentration in the shell of these samples versus the increasing annealing temperature