New York: Researchers in the US are working on a unique technique to make portable devices and electric vehicles stay charged longer by extending the life of the rechargeable lithium-ion batteries powering them.
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Researcher Yang Yang from University of Central Florida 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, published 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 per cent by using a copper-tin film compared to a tin film that is often used,” said Yang, who is with UCF’s NanoScience Technology Centre.
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 stabilising 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 said.
“Each alloy is unique in composition, structure and property,” Yang noted.