Fig. 2: Microstructure of the electrode.
From: A quasi-solid-state high-rate lithium sulfur positive electrode incorporating Li10GeP2S12
Scanning electron microscope (a–e), optical microscopy measurements (f, g) and X-ray computed tomography (h, i) of the positive electrode incorporating sulfur, LGPS, ketjen black, and PVDF-HFP binder. a KB powder; b a side profile of the electrode highlighting the strong adhesion to the Al foil and dispersion of sulfur in the electrode; c the binder connectivity between the particles in the electrode; d KB with uniform particles in the electrode; e PVDF-HFP between cracks; f surface topography of the electrode obtained using optical microscopy; g cross-surface profile of the electrode highlighting the uniform thickness observed following manufacture; h) morphology of electrode; i morphology of S distribution within electrode.
