Increasing the energy density of layered oxide battery electrodes is challenging as accessing high states delithiation often triggers voltage degradation and oxygen release. Here we utilize transmission-based X-ray absorption spectromicroscopy ptychography on mechanically cross-sectioned Li1.18–xNi0.21Mn0.53Co0.08O2–? to quantitatively profile deficiency over cycling at nanoscale. The penetrate...

X-ray Photoelectron Spectroscopy of large bandgap or insulating material surfaces relies on an effective mechanism that compensates for the emission (loss) electrons by maintaining surface at a steady-state uniform potential. While may be attained utilizing active compensation, such as low power electron emitting filament, there is possibility potential not over area analyzed, leading to peak s...