Self Extinguishing Lithium-Ion Batteries?

AUG 4 2015 BY MARK KANE 2

Test Vehicle Used For Fire Extinguishing Training

Test Vehicle Used For Fire Extinguishing Training

Maybe firefighters will have more free time if self-extinguishing batteries will prevent fires in electric cars?

A team from the Advanced Batteries Research Center of the Korea Electronics Technology Institute is developing a concept of use of heat absorbing microcapsules within lithium-ion battery cells .

Thermal runaway and high temperatures are the main problems in lithium-ion battery fires.

“The microcapsules release the extinguisher agent upon increased internal temperature of a battery cell, resulting in rapid heat absorption through an in situ endothermic reaction and suppression of further temperature rise and undesirable thermal runaway. In a standard nail penetration test, the temperature rise was reduced by 74% without compromising electrochemical performances. Based on the results, the team suggested in a paper in the ACS journal Nano Letters that this scalable, simple and cost-effective strategy could be extensively applied to various high energy-density devices to ensure human safety.”

If microcapsules will be able to significantly lower the risk of fires, without side effects (higher costs or lower energy denisty), battery manufacturers may be interested.

Source: Korea Electronics Technology Institute via Green Car Congress

Categories: Battery Tech

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2 Comments on "Self Extinguishing Lithium-Ion Batteries?"

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Daniel
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Daniel

Looks like a great solution that’s in search of a problem. Can’t hardly turn around these days without hearing daily about another devastating battery fire resulting in a roasted BEV.

Francis L
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Francis L

Telling that there is no side effects seems to be a big lie. I really don’t see how this technology can be add the a battery without lowering the performance or making it more expensive.

Batteries are already pretty safe compare to all the fuel we have in our cars.