Understanding the evolution of lithium dendrites at Li6.25Al0.25La3Zr2O12 grain boundaries via operando microscopy techniques

Abstract

Lithium metal penetration into solid-state electrolytes is a major drawback for developing all-solid-state batteries. Here, authors, via operando force microscopy, demonstrate that the trapping of electrons in garnet-type solid-state electrolyte grain boundaries is the origin of cell failure.