A family of dual-anion-based sodium superionic conductors for all-solid-state sodium-ion batteries.

ABSTRACT: The sodium (Na) superionic conductor is a key component that could revolutionize the energy density and safety of conventional Na-ion batteries. However, existing Na superionic conductors are primarily based on a single-anion framework, each presenting inherent advantages and disadvantages. Here we introduce a family of amorphous Na-ion conductors (Na₂O₂-MCl_y, M = Hf, Zr and Ta) based on the dual-anion framework of oxychloride. Benefiting from a dual-anion chemistry and with the resulting distinctive structures, Na₂O₂-MCl_y electrolytes exhibit room-temperature ionic conductivities up to 2.0 mS cm^-1, wide electrochemical stability windows and desirable mechanical properties. All-solid-state Na-ion batteries incorpo

SUBMITTER: Lin X 

PROVIDER: S-EPMC11685097 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature