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Scientists have stabilized a high-performance sodium compound via rapid cooling, allowing sodium-based solid-state batteries to outperform previous designs and approach lithium performance at a lower cost. This advance could accelerate safer, greener battery production for mass use.
October 17, 2025
Source:
Chemistry Europe - Wiley
Major leap for sodium-based batteries
Researchers have stabilized a high-performance form of sodium hydridoborate, advancing sodium solid-state batteries toward commercial viability. This metastable structure was locked in using a process called quenching—rapidly cooling the heated compound—which had not been applied to solid battery electrolytes before. As reported by ScienceDaily (source) and the University of California San Diego (source), the result is a material with ionic conductivity at least 10 times greater than previous sodium battery electrolytes. This is a critical step forward for battery safety, cost, and scalability.
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Source:
http://ScienceDirect.com
Performance edge over lithium and manufacturing gains
Unlike previous sodium-ion batteries, the new design allows for the use of thicker, high-areal-loading cathodes by combining the advanced electrolyte with a chloride-coated O3-type cathode. This increases energy density, previously a major hurdle for sodium technologies (source).
Key technical aspects
Ionic conductivity: 10x higher than alternatives
Cathode compatibility: Supports high-capacity loading
Industrial scalability: Uses established quenching processes used in other fields
Because the process uses materials and methods familiar to industry, experts expect faster commercialization and simplified integration for manufacturers.
Read More
Source:
Nature
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