Science Daily May 31, 2022
To make all-solid-state sodium batteries (ASSSBs) commercially viable a team of researchers in the US (University of Houston, Iowa State University, Purdue University, Rice University, Northern Illinois University, UC Irvine) has developed a family of oxysulfide glass solid electrolytes (SEs) that not only exhibit the highest critical current density among all Na-ion conducting sulfide-based SEs, but also enable high-performance ambient-temperature sodium-sulfur batteries. By forming bridging oxygen units, the solid electrolytes undergo pressure-induced sintering at room temperature, resulting in a fully homogeneous glass structure with robust mechanical properties. The self-passivating solid electrolyte interphase at the Na|SE interface is critical for interface stabilization and reversible Na plating and stripping. The new structural and compositional design strategies provide a new path for the development of safe, low-cost, energy-dense, and long-lifetime ASSSBs…read more. Open Access TECHNICAL ARTICLEÂ
Classification of solid electrolyte−Na metal interfaces. Credit: Nature Communications volume 13, Article number: 2854 (2022)Â