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Current issue

ELEKTRO 2/2020 was released on February 12th 2020. Its digital version will be available on March 12th 2020.

Topic: Electrical apparatus, Internet of Things; Medical technologies

Main Article
Monitoring vacancy of an intelligent building

SVĚTLO (Light) 1/2020 was released on February 3th 2020. Its digital version will be available on March 3th 2020.

Fairs and exhibitions
Invitation for Light+Building 2020 – attendant programme
Prolicht+Sound fair celebrates the 25th birthday
FOR CITY 2020 introduces oneself in parallel to FOR ARCH fair

Luminaires and light apparatuses
Modern trends in automobile headlamps

Fireproof Lithium-Ion Batteries That Harden When Hit

28.08.2018 | IEEE Spectrum | spectrum.ieee.org

To make lithium-ion batteries safer, researchers have come up with a novel solution: a liquid electrolyte that becomes solid on impact. The electrolyte could keep batteries from heating up and bursting into flames when they are in a car crash or take a hard fall. And it could be cost-effectively and easily employed in today’s battery production lines.

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.

Fireproof battery

Researchers instead made an electrolyte that is normally a liquid but becomes solid when subjected to strain. So if a battery is crushed or penetrated, the electrolyte would harden, keeping the electrodes from coming in contact.

 

Read more at IEEE Spectrum

Image Credit: Gabriel Veith

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