Enhanced rate capabilities in a glass-ceramic-derived sodium all-solid-state battery.

ABSTRACT: An all-solid-state battery (ASSB) with a new structure based on glass-ceramic that forms Na₂FeP₂O₇ (NFP) crystals, which functions as an active cathode material, is fabricated by integrating it with a β″-alumina solid electrolyte. Two important factors that influence the rate capability of this ASSB were optimised. First, the particle size of the precursor glass powder from which the NFP crystals are formed was decreased. Consequently, the onset temperature of crystallisation shifts to a lower temperature, which enables the softening of NFP crystals and their integration with β″-alumina at a low temperature, without the interdiffusion of different crystal phases or atoms. Second, the interface between the β″-alumina solid electrolyte and cathode active mate

SUBMITTER: Yamauchi H 

PROVIDER: S-EPMC7289851 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature