Researchers from the Chinese Academy of Sciences have developed a polymerizable non-flammable electrolyte for sodium-ion batteries, achieving "zero thermal runaway" and eliminating fire and explosion risks. This breakthrough in battery safety could accelerate the commercial use of sodium-ion technology, potentially revolutionizing the field of battery technology. The new electrolyte provides active thermal blocking, making it a game-changer in the quest for safer and more efficient energy storage solutions.