New lithium batteries have built-in fire extinguishers

Photo credit: Riley Edwards via Unsplash Article by Andrew Paul. Popular Science – July 15, 2025. Research article: PNAS.

Lithium-ion batteries are a hot commodity for the renewable energy industry. Their high energy density allows them to store huge amounts of power relative to their size, making them a go-to choice for electric vehicles, smartphones, and other rechargeable devices. Unfortunately, the heat from those same hot commodities occasionally becomes literal.[…] 

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