fig3

Figure 3. Characterization of cathode materials. SEM/EDX images acquired with the BSE detector of (A) pure NMC₉₅₅ powder at a magnification of 20,000; (B and C) cathode sample of 57% NMC₉₅₅+38% Li₆PS₅Cl+3% C₆₅+2% SBR at different magnifications 500 and 2,000×. Surface topography of cathode material using atomic force microscopy and SKPM; (D) 3D view; 2D electrochemical profile in (E) and 3D in (F). Note: the electrochemical potentials are plotted as analyzed vs. SHE (standard hydrogen electrode); to refer to Li⁰: Vνs Li⁰ = Vνs SHE + 3.05. The areal capacity of the cathodes in SEM/EDX (B and C) and atomic force microscopy/SKPM (D-F) analyses is ~0.17-0.20 mAh.cm^-2. SEM: Scanning electron microscope; EDX: energy-dispersive X-ray spectroscopy; SKPM: scanning Kelvin Probe Microscopy.