Short Bytes:Lithium-ion battery explosions don’t surprise us anymore. To get rid of this danger, a team of researchers at Stanford University has designed a battery that has an inbuilt fire extinguisher. It uses triphenyl phosphate (TPP) as a flame retardant, which is stored inside a shell that melts when the battery gets too hot. Such applications are surely encouraging as they make ourLithium-ion battery-powered devices more secure.
Lithium-ion batteries used in these gadgets,despitetheir capacity to hold the charge for a longer time,are prone to explosiondue to their spiraling swiss roll structure. Now, to minimize the risks of such fires and explosions,the researchers at Stanford Universityhave devised a lithium-ion battery that has an inbuilt fire extinguisher.
For this purpose, flame retardant triphenyl phosphate (TPP) is used, which is stored inside a shell that contains electrolyte fluid. TPP is a popular organophosphorus-based flame retardant. The protective shell is made of polyvinylidene fluoride–hexafluoropropylene (PVDF-HFP), which is insoluble in electrolytes of lithium-ion batteries.
When the temperature of the battery rises, the shell melts at 150 °C and releases the chemical. In the laboratory tests, the battery fires were extinguished in 0.4 seconds.
The researchers expect that this type of mechanism can be used in other high-energy storage devices too.
So, did you find this futuristic battery with inbuilt fire extinguisher interesting? Don’t forget to share your views and feedback.
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