NaCl interphase enables stable Na 2.85 Sb 0.95 W 0.05 S 3.9 Cl 0.1 -based all-solid-state sodium batteries

at 0.1C, maintaining a capacity retention of 81.6% after 100 cycles. This work presents a viable approach for designing sodium sulfide electrolytes that combine high ionic conductivity with superior stability with a sodium anode.