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Current issue

ELEKTRO 8-9/2018 was released on September 4th 2018. Its digital version will be available immediately.

Topic: Electrical engineering in industry; 60th International Engineering Fair in Brno

Main Article
Smart Cities (part 3 – volume 2)

SVĚTLO (Light) 5/2018 was released on September 17th 2018. Its digital version will be available immediately.

Interiors lighting
Luminaire selection by the concept of interior
The unique book about interiors nowadays on market
Invitation on colloquium Interiéry 2018 – exceptional action for the seventh time

Newsreel
Profesor Jiří Habel passed away – memories remain

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

-jk-