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A University of Central Florida researcher is working to make longer the rechargeable lithium-ion batteries powering

05 Nov 2020 - rechargeable lithium-ion batteries batteries more efficient rechargeable battery

A University of Central Florida researcher is working to make portable devices and electric vehicles stay charged longer by extending the life of the rechargeable lithium-ion batteries powering them.


Assistant Professor Yang Yang is doing this by making the batteries more efficient, with some of his latest work focusing on keeping an internal metal structure, the anode, from falling apart over time by applying a thin, film-like coating of copper and tin. The new technique is detailed in a recent study in the journal Advanced Materials.

An anode generates electrons that travel to a similar structure, the cathode, inside the battery, thus creating a current and power.
"Our work has shown that the rate of degradation of the anode can be reduced by more than 1,000 percent by using a copper-tin film compared to a tin film that is often used," said Yang, who is with UCF's NanoScience Technology Center.
Yang is an expert in battery improvement including making them safer and able to withstand extreme temperatures.
The technique is unique because of its use of the copper-tin alloy and is an important improvement in stabilizing rechargeable battery performance, Yang says.
It is also scalable for use in the smallest smartphone battery to larger batteries that power electric cars and trucks.

"We are motivated by our most recent research progress in alloyed materials for various applications," he says. "Each alloy is unique in composition, structure and property."

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