In a recent study published in ACS Applied Materials & Interfaces, researchers from the Chair of Technical Electrochemistry at TUM present a novel operando X-ray photoelectron spectroscopy (XPS) setup to investigate the electrochemical stability of composite cathodes in all-solid-state batteries (ASSBs). The team examined the interface between a Ni-rich layered oxide cathode and a Li₆PS₅Cl solid electrolyte under realistic cycling conditions.
This work demonstrates the power of operando tender XPS for understanding interfacial degradation processes in ASSBs and provides important insights for the design of more stable solid-state battery chemistries.
Read the study: https://doi.org/10.1021/acsami.4c06108