Sodium-sulfur battery systems are proving critical for long-duration energy storage in extreme temperature environments, offering a scalable, cost-effective solution to stabilize grids and support renewable integration worldwide. . A sodium–sulfur (NaS) battery is a type of molten-salt battery that uses liquid sodium and liquid sulfur electrodes. These batteries are primarily used in large-scale energy storage applications, especially for power grids and renewable energy integration. . Rechargeable room-temperature sodium–sulfur (Na–S) and sodium–selenium (Na–Se) batteries are gaining extensive attention for potential large-scale energy storage applications owing to their low cost and high theoretical energy density. Optimization of electrode materials and investigation of. . Battery energy storage systems (BESS) will be a key part of how grid operators tackle these challenges but come with inherent challenges of their own. They are complex technologies with many specialized components, and some of them, like lithium-ion batteries, are very temperature-sensitive with a. .
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