Rechargeable Solid-State Na-Metal Battery Operating at -20 °C.

ABSTRACT: Achieving satisfactory performance for a solid-state Na-metal battery (SSNMB) with an inorganic solid electrolyte (SE), especially under freezing temperatures, poses a challenge for stabilizing a Na-metal anode. Herein, this challenge is addressed by utilizing a Natrium super ionic conductor (NASICON) NASICON-type solid electrolyte, enabling the operation of a rechargeable SSNMB over a wide temperature range from -20 to 45 °C. The interfacial resistance at the Na metal/SE interface is only 0.4 Ω cm² at 45 °C and remains below 110 Ω cm² even at -20 °C. Remarkably, long-term Na-metal plating/stripping cycles lasting over 2000 h at -20 °C are achieved with minimal polarization voltages at 0.1 mA cm^-2 . Further analysis reveals the formation of a uniform Na

SUBMITTER: Jin H 

PROVIDER: S-EPMC10520632 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature