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Current issue

ELEKTRO 7/2019 was released on June 26th 2019. Its digital version will be available on July 26th 2019.

Topic: Cables, conductors and cable engineering, Tools, equipment and accessories for work with cables

Main Article
Asset management and diagnostic needs in Industry 4.0

SVĚTLO (Light) 3/2019 was released on June 11th 2019. Its digital version will be available on July 15th 2019.

Fairs and exhibitions
Euroluce 2019 by designers eyes
Exhibition Light in architecture 2019
Amper 2019 in capture of sophisticated technologies

Refreshing our memory
Lighting glass from Kamenný pahorek

Rechargeable batteries that last longer and re-charge more rapidly

11.07.2016 | Paul Scherrer Institute | www.psi.ch

Materials researchers at the Swiss Paul Scherrer Institute PSI in Villigen and the ETH Zurich have developed a very simple and cost-effective procedure for significantly enhancing the performance of conventional Li-ion rechargeable batteries.

Instead of inventing a new battery technology, researchers took a different approach: They checked existing components with a view to fully exploiting their potential. Simply by optimizing the graphite anode – or negative electrode - on a conventional Li-ion battery, researchers were able to boost battery performance. Under laboratory conditions, they were able to enhance storage capacity by a factor of up to 3. Owing to their complex construction, commercial batteries will not be able to fully replicate these results. But performance will definitely be enhanced, perhaps by as much as 30 – 50 percent: further experiments should yield more accurate prognoses.

New type of rechargeable battery

The method involves coating the graphite flakes with nanoparticles of iron oxide sensitive to a magnetic field and suspending them in ethanol. The suspended and already magnetized flakes are subsequently subjected to a magnetic field of 100 millitesla—about the strength of a fridge magnet.. As a result, they are perfectly ordered, reducing the diffusion distances covered by the lithium ions to a minimum.

Read more at Paul Scherrer Institute

Image Credit: Paul Scherrer Institute

-jk-