NaCl interphase enables stable Na_2.85Sb_0.95W_0.05S_3.9Cl_0.1-based all-solid-state sodium batteries.

ABSTRACT: All-solid-state sodium (Na) batteries (ASSSBs) have attracted considerable attention due to their inherent safety and low cost. Developing sodium sulfide electrolytes with high Na⁺ ionic conductivity and excellent stability in contact with sodium metal anodes is crucial to realize high-performance ASSSBs. Herein, a tungsten (W) and chlorine (Cl) co-doped Na_2.85Sb_0.95W_0.05S_3.9Cl_0.1 solid electrolyte is effectively prepared through melt-quenching combined with a subsequent annealing process. Through W-Cl co-doping, Na vacancies are introduced into the Na₃SbS₄ electrolyte, thereby enhancing the ionic conductivity from 0.92 mS cm^-1 to 12.66 mS cm^-1. Meanwhile, the in situ formed

SUBMITTER: Feng Z 

PROVIDER: S-EPMC12895341 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature