Fire-Proof Lithium-Ion Batteries


Fire-Proof Lithium-Ion Batteries

Liquid electrolyte that solidifies on impact could keep batteries from shorting and catching fire.

To make lithium-ion batteries safer, researchers find out a solution: A liquid electrolyte that becomes solid on impact. The electrolyte could keep batteries from heating up and bursting into flames.And it could be cost-effectively and easily .

Lithium-ion battery cells contain two electrodes separated by a thin plastic sheet and submerged in a liquid electrolyte. If the plastic separator breaks, the electrodes can “touch” each other, shorting the battery and heating it up, which could cause the volatile liquid electrolyte to ignite.

Li-ion battery

‘No risk’ with new Li-Ion batteries

The research is published in the journal Joule.

“In the past, if you wanted high energy, you would choose a non-aqueous lithium-ion battery, but you would have to compromise on safety. If you preferred safety, you could use an aqueous battery such as nickel/metal hydride, but you would have to settle for lower energy,” said co-author Kang Xu, from the US Army Research Laboratory (ARL).