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Existing EV batteries may last up to 40% longer than expected
Consumers’ real-world stop-and-go driving of electric vehicles benefits batteries more than the steady use simulated in almost all laboratory tests of new battery designs, Stanford-SLAC study finds.
“We’ve not been testing EV batteries the right way,” said Simona Onori, senior author and an associate professor of energy science and engineering in the Stanford Doerr School of Sustainability. “Going forward, evaluating new battery chemistries and designs with realistic demand profiles will be really important,” said energy science and engineering postdoctoral scholar Le Xu. Scientists and engineers could apply the principles to other energy storage applications, as well as to other materials and devices in physical sciences in which aging is crucial, like plastics, glasses, solar cells, and some biomaterials used in implants.
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