Sodium-based solid-state battery design maintains performance at room and subzero temperatures

Researchers have developed a sodium-based solid-state battery that maintains performance at room and subzero temperatures. This breakthrough utilizes a stabilized metastable structure of sodium hydridoborate, significantly increasing ionic conductivity. The design also incorporates thick cathodes, improving energy density. This advancement offers a more sustainable and cost-effective alternative to lithium-ion batteries, crucial for future energy storage solutions.