Hunting Sodium Dendrites in NASICON-Based Solid-State Electrolytes

NASICON- (Na superionic conductor-) based solid-state electrolytes (SSEs) are believed to be attracting candidates for solid-state sodium batteries due to their high ionic conductivity and prospectively reliable stability. However, the poor interface compatibility and the formation of Na dendrites inhibit their practical application. Herein, we directly observed the propagation of Na dendrites through NASICON-based Na 3.1 Zr 2 Si 2.1 P 0.9 O 12...