High-performance all-solid-state electrolyte for sodium batteries enabled by the interaction between the anion in salt and Na₃SbS₄.

ABSTRACT: All-solid-state sodium batteries with poly(ethylene oxide) (PEO)-based electrolytes have shown great promise for large-scale energy storage applications. However, the reported PEO-based electrolytes still suffer from a low Na⁺ transference number and poor ionic conductivity, which mainly result from the simultaneous migration of Na⁺ and anions, the high crystallinity of PEO, and the low concentration of free Na⁺. Here, we report a high-performance PEO-based all-solid-state electrolyte for sodium batteries by introducing Na₃SbS₄ to interact with the TFSI^- anion in the salt and decrease the crystallinity of PEO. The optimal PEO/NaTFSI/Na₃SbS₄ electrolyte exhibits a remarkably enhanced Na⁺ trans

SUBMITTER: Lu Y 

PROVIDER: S-EPMC8943854 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature