Lithium-ion battery packs its own fire extinguisher

Burning phones may be a thing of the past

As useful as they have proven to be in powering our phones, tablets and electric cars, lithium-ion batteries still have their weaknesses. Chief among them is the very real danger of fire when subjected to high temperatures, a risk we have seen materialize recently through blazing hoverboards and Galaxy Note 7s. Replacing the combustible electrolytes and integrating smart chips are a couple of ways researchers might avert the danger, and another, as Stanford scientists have now found, is by building a flame retardant into the battery that releases itself when things start to heat up.

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