This research aims to identify key limitations affecting the discharge capacity of lithium-oxygen batteries by mapping the discharge product distribution.
Utilized cross-sectional scanning electron microscopy and energy-dispersive X-ray spectroscopy to map discharge product distribution.
Analyzed electrode distribution focusing on areas of O2 influence and performance under varied conditions.
Employed lab-based X-ray nano-computed tomography for validation of sample preparation effects.
Discharge product accumulation was greater at the O2-side of the electrode, indicating pore blockage effects.
Key limitations attributed to oxygen starvation leading to under-utilization of air electrodes were confirmed.
Simulated battery results were consistent with mapped discharge product distribution, validating the computational model.