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Longer-Lasting Batteries for Smartphones and other Devices in the Works at UCF

wallpapers Business 2020-08-13 >

Yang Yang, a researcher from the University of Central Florida (UCF), is working on extending the life of rechargeable lithium-ion batteries that power electric cars, smartphones and other portable devices.

The key to achieving longer-lasting batteries is making them more efficient, which Yang’s team is currently pursuing by looking for ways to prevent batteries’ internal metal structure – the anode – from falling apart over time.

More robust anodes could significantly extend how long lithium-ion batteries can remain charged. Image: Wikipedia.org, CC BY-SA 3.0

In the most basic sense, batteries work by channelling the anode-generated electrons towards a similar structure, called the cathode, thereby creating an electric current and power necessary for the vast majority of electronic devices.

To maintain the integrity of the anode, which would make batteries more resistant to degradation, Yang and colleagues are applying a thin, film-like coating of copper and tin. The emerging new technique is detailed in a recent study published in Advanced Materials.

“Our work has shown that the rate of degradation of the anode can be reduced by more than 1,000 per cent by using a copper-tin film compared to a tin film that is often used,” said Yang, who is an Assistant Professor at UFC’s NanoScience Technology Center.

Up until his current undertaking, Yang has already been known as an expert in battery improvement, namely – making them safer for general use and able to withstand extreme temperatures without losing function.

The technique is set to not only stabilise the performance of rechargeable batteries, but to also be scalable virtually without limit. If further research goes according to plan, Yang and his team’s efforts are likely to pay off in the production of a wide variety of stable batteries – from those used in electric vehicles to smartphones.

“The structural reconstruction mechanism in this work shines a light on new materials and structural design that can stabilize high‐performance and high‐volume‐change electrodes for rechargeable batteries and beyond,” wrote the researchers in their paper.

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