<ul><li>Scientists have developed a new sensor to prevent fires and explosions caused by lithium-ion batteries.</li><li>The sensor is designed to detect ethylene carbonate (EC) gas, which is released when the battery is damaged or overheated.</li><li>The sensor uses a covalent organic framework (COF) material, called COF-QA-4, to detect EC gas at low levels.</li><li>This low-cost and energy-efficient sensor could be used in electric vehicles and other devices to provide early warnings and prevent accidents.</li></ul>

Tiny new sensor could help stop battery fires before they start

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