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Current issue

ELEKTRO 8-9/2017 was released on September 5th 2017. Its digital version will be available on September 5th 2017.

Topic: 59th International engineering fair in Brno; Electrical engineering in industry

Main Article
Fuel cells
Renaissance of synchronous reluctance motors
Actuator design working with electromagnetic field

SVĚTLO (Light) 5/2017 was released on September 18th 2017. Its digital version will be available on September 18th 2017.

Luminaires and luminous apparatuses
MAYBE STYLE introducing LED design luminaires of German producer Lightnet
TREVOS – new luminaires for industry and offices
How many types of LED panels produces MODUS?
Intelligent LED luminaire RENO PROFI

Interiors lighting
The light in indoor flat interior – questions and answers

Building Better Batteries

20.12.2016 | Caltech | www.caltech.edu

A joint team of researchers from Caltech and Carnegie Mellon University has measured for the first time the strength of lithium metal at the nano- and microscale, a discovery with important implications for suppressing dendrite formation and improving lithium-ion batteries.

Using a special vacuum chamber at Caltech, the team of researchers formed pillars of single-crystal lithium a few micrometers tall and some nanometers to micrometers in diameter. Each of these single crystalline lithium pillars was extracted from a larger piece of lithium, and thus each had a particular crystallographic orientation—a particular angle with respect to the original sample.

More effective batteries

The researchers discovered that at this size, lithium is up to 100 times stronger than previous measurements indicated. Additionally, collaborators at Carnegie Mellon University calculated how the stiffness of lithium dendrites varied with the crystallographic orientation and discovered that it could be as different as a factor of four.

Read more at Caltech

Image Credit: Caltech