Titanium-Oxygen Clusters Brazing Li with LiLaZrTaO for High-Performance All-Solid-State Li Batteries.

Garnet-based solid-state electrolytes are considered crucial candidates for solid-state Li batteries due to their high Li conductivity and nonflammability; however, poor interfacial contact with the Li anode and growth of Li dendrites limit their application. Herein, a high-activity titanium-oxygen cluster is used as a brazing filler to braze the LiLaZrTaO (LLZTO) with an Li anode into the whole unit. The brazing layer leads to a significantly lower interfacial impedance of 8.