New material is next step toward stable high-voltage long-life solid-state batteries

A team of researchers designed and manufactured a new sodium-ion conductor for solid-state sodium-ion batteries that is stable when incorporated into higher-voltage oxide cathodes. This new solid electrolyte could dramatically improve the efficiency and lifespan of this class of batteries. A proof of concept battery built with the new material lasted over 1000 cycles while retaining 89.3% of its capacity--a performance unmatched by other solid-state sodium batteries to date.

from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/02/210223110353.htm