Researchers develop energy source that shuts down before a hoverboard overheats

Stanford University researchers have developed a lithium-ion battery that shuts off before overheating and then restarts immediately when the temperature cools down. This new tech could prevent the type of fires that prompt recalls and bans for a wide variety of battery-powered devices including computers, navigation systems and last year's must-have Christmas present: hoverboards.

A standard lithium-ion battery consists of two electrodes and a liquid or gel electrolyte that carries charged particles between them. Puncturing, shorting or overcharging the battery generates heat and if the temperature reaches around 300°F (150°C), there is a risk of the electrolyte catching fire.

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