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ELEKTRO 3/2017 was released on March 15th 2017. Its digital version will be available immediately.

Topic: Amper 2017 – 25th International trade fair for electrical engineering

Main Article

Problems of electromobility

SVĚTLO (Light) 2/2017 was released on March 17th 2017. Its digital version will be available immediately.

Fair and exhibitions
Inspired lighting from foreign fairs 

Accessories of lighting installations
On lighting operation is possible to save with minimum investments
Maxos fusion – new Philips Quit assembling system
Inteligent solution Dalisys® for control lighting

Battery technology with off-the-charts charging capacity

25.04.2016 | Phys.org | www.phys.org

University of California, Irvine researchers have invented nanowire-based battery material that can be recharged hundreds of thousands of times, moving us closer to a battery that would never require replacement. The breakthrough work could lead to commercial batteries with greatly lengthened lifespans for computers, smartphones, appliances, cars and spacecraft.

Scientists have long sought to use nanowires in batteries. Thousands of times thinner than a human hair, they're highly conductive and feature a large surface area for the storage and transfer of electrons. However, these filaments are extremely fragile and don't hold up well to repeated discharging and recharging, or cycling. In a typical lithium-ion battery, they expand and grow brittle, which leads to cracking.

New battery technology using nanowires

UCI researchers have solved this problem by coating a gold nanowire in a manganese dioxide shell and encasing the assembly in an electrolyte made of a Plexiglas-like gel. The combination is reliable and resistant to failure.

The study leader, UCI doctoral candidate Mya Le Thai, cycled the testing electrode up to 200,000 times over three months without detecting any loss of capacity or power and without fracturing any nanowires.

Read more at Phys.org

Image Credit: UCI

-jk-