Oxyfluoride glass-ceramics is considered a great candidate for optical refrigeration. Their ability to form low-phonon fluoride crystals embedded in an oxide glass matrix presents interest the development of fluorescent efficient materials with good mechanical and thermal resistance. A better understanding material microstructure its relations on properties mandatory achieve required refrigerat...

High-entropy materials with tailorable properties are receiving increasing interest for energy applications. Among them, (disordered) rock-salt oxyfluorides hold promise as next-generation cathodes use in secondary batteries. Here, we study the degradation behavior of a high-entropy oxyfluoride cathode material lithium cells situ via acoustic emission (AE) monitoring. The AE signals allow event...