The new battery punctured with a nail (Image source: Sun, Y., Zuo, C., Wang, H. et al 2025; AI-edited) Researchers in China have developed a new lithium-ion battery design that virtually eliminates heat from thermal runaway, drastically reducing the fire risk from damaged batteries. Traditional lithium-ion batteries, which power a wide range of electronic devices from cars to smartwatches, pose a significant fire risk. When damaged, overcharged, or defective, they can undergo thermal runaway —...