 Research on lithium sulfur and lithium oxygen batteries has increased significantly in the past decade, driven by their high theoretical energy density and abundance of sulfur and oxygen. However, progress toward practical device development is hindered by fundamental key issues. Sodium-based battery systems are also being explored due to their natural abundance and potential for low-cost components. The substitution of lithium for sodium has a significant impact on the overall properties of the cell reaction, with differences in ion transport, phase stability, electrode potential, energy density, etc. Whether these differences will benefit a more reversible cell chemistry is still an open question, but some initial reports on room temperature NaS-S8 and NaS-O2 cells show promising differences compared to LiS-S8 and LiS-O2 systems. This article was authored by Philippa del Helm, Pascal Hartmann, Konrad Elbender, and others. We are article.tv, links in the description below.