A compatible anode/succinonitrile-based electrolyte interface in all-solid-state Na-CO₂ batteries.

ABSTRACT: All-solid-state sodium batteries have great potential for large-scale energy storage applications. However, constructing a compatible Na anode/solid-state electrolyte (SSE) interface is still challenging because most SSEs are unstable toward Na metal. A succinonitrile (SN) SSE shows high room-temperature ionic conductivity (10^-3 S cm^-1) but easily deteriorates if in contact with Na metal, leading to continuously increased interfacial resistance. Here we present an extremely simple approach to introduce a compact NaF-rich interphase on a Na surface via chemical reactions between fluoroethylene carbonate-Na⁺ and Na metal, resulting in a compatible Na anode/SN-based electrolyte interface. The in situ formed NaF-rich interphase can not only preven

SUBMITTER: Lu Y 

PROVIDER: S-EPMC6471599 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature