We Continue the Work of Those
Who Were the First.

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Current issue

ELEKTRO 2/2019 was released on February 13th 2019. Its digital version will be available on March 11th 2019.

Topic: Electrical appliances – switching, protective, signalling and special

Main Article
Advanced power converter topology
Smart Cities (part 7)

SVĚTLO (Light) 1/2019 was released on February 4th 2019. Its digital version will be available on March 5th 2019.

Fairs and exhibitions
Invitation at LIGHT IN ARCHITECTURE exhibition
Prolight + Sound 2019: keep up with time
The light at For Arch 2018 fair

Public lighting
Lights of towns and communities 2018 – the meeting at the round table

Using Crumpled Graphene Balls to Make Better Batteries

19.01.2018 | Northwestern University | www.mccormick.northwestern.edu

Lithium metal-based batteries have the potential to turn the battery industry upside down. With the theoretically ultra-high capacity of lithium metal used by itself, this new type of battery could power everything from personal devices to cars.

In current batteries, lithium is usually atomically distributed in another material such as graphite or silicon in the anode,” explains Northwestern Engineering’s Jiaxing Huang. “But using an additional material dilutes the battery’s performance.” Huang and his collaborators have solved this problem by taking a different approach — one that even makes batteries lighter weight and able to hold more lithium.

More effective batteries

The solution lies in a scaffold made from crumpled graphene balls, which can stack with ease to form a porous scaffold, due to their paper ball-like shape. They not only prevent dendrite growth but can also survive the stress from the fluctuating volume of lithium.

Read more at Northwestern University

Image Credit: Northwestern University

-jk-