 Abstract solid electrolyte, ASE, is essential for developing all solid-state battery, ASSB, technology. ASEs must have high ionic conductivity, stability at various temperatures, and compatibility with the battery components. In this study, researchers developed a new family of amorphous solid electrolytes composed of lithium oxides and mixed anions such as Tarsie L5 and HFC L5. These materials exhibit high ionic conductivity and stability at room temperature and low temperatures. Furthermore, they demonstrate excellent electrochemical performance in ASSBs, making them promising candidates for future applications. This article was authored by Xiumin Zhong, Fapeng Zhao, Jiatang Chen, and others.