Novel Sulfide-Chloride Solid-State Electrolytes with Tunable Anion Ratio for Highly Stable Solid-State Sodium-Ion Batteries.

ABSTRACT: Solid-state Na batteries (SSNBs) are among the most promising next-generation energy storage devices due to their high energy density, enhanced safety, and cost-efficiency. Achieving high-performance SSNBs depends on the development of solid-state electrolytes (SSEs) with excellent ionic conductivity, wide electrochemical windows, and robust mechanical properties. Sulfide and halide-based Na SSEs have been widely studied in recent years with their respective strengths and limitations. Herein for the first time, a new family of Na-Zr-S-Cl sulfide-chloride Na SSEs with tailored anion compositions is explored. A high ionic conductivity of 4.89 × 10^-4 S cm^-1 is realized with a Cl-rich structure, attributed to the unique chloride bridging structure and low Na-ion migration

SUBMITTER: Dong ZL 

PROVIDER: S-EPMC12306401 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature