The OÆSE endstation at EMIL at the BESSY II synchrotron facility in Berlin allows real-time investigation of energy materials through operando X-ray absorption spectroscopy. The possibility to use soft, tender, and hard X-rays combined with versatile operando sample environments enables the study of a wide range of energy materials under relevant operation conditions.

Welcome to the PSI Operando Day webpage! "Operando" refers to the characterization of functional materials under reaction conditions, with simultaneous measurement of their performance. PSI has many g...

Polymer electrolytes are promising candidates as separators in lithium metal batteries. Here, authors reveal the existence of local lithium-based crystallites inside the polymer electrolyte in a lithium symmetric cell. A combination of unique operando wide-angle X-ray scattering with a nano-sized beam and complementary spectroscopic techniques identifies these crystallites as lithium carbonate, lithium hydroxide, and even metallic lithium. It is shown that these crystallites lower the ionic conductivity and the transference number.