Electric vehicles leave behind mountains of dead lithium-ion batteries. A new “injection” brings them back to life
, potentially reducing both the amount of waste that’s quickly piling up from spent electric vehicle batteries and the need to produce as many new ones.
With consumer markets and waste piles both growing rapidly, Yue Gao, a chemist at Fudan University in Shanghai, and his colleagues anticipated a rising demand for longer-lifeGao and his colleagues wanted to find a molecule that could replenish a dead cell by infusing it with lithium ions. But “we had no idea what kinds of molecules could do that job or what their chemical structures would be, so we used machine learning to help us,” says Chihao Zhao, a Ph.D.
And EV power comes not from a single, simple cell but from a battery pack that can comprise hundreds or even thousands of cells, along with heat-control systems and other components. “We have only conducted experiments on cells, and we need to find a way to apply it onto a whole battery pack,” Gao says.
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