Figure 3

Cross-sectional FE-SEM images of LPSCl-infiltrated NCM622-based composite electrodes and their corresponding EDXS elemental maps. The cathodes were prepared by the solid electrolyte (SE) infiltration process at different temperatures: (a) at room temperature and (b) at elevated temperature (45 °C). The loading value of the electrodes was ~ 17.92 mg/cm2. After cutting the electrode cross-section using a FIB, the spatial distributions of SE elements (representatively S ions) were analysed and the uniform distribution of SE inside the electrodes was confirmed when processed at 45 °C.