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Researchers reveal the root cause of rechargeable battery breakdown. For decades, scientists have assumed that the inevitable filmy buildup on electrodes inside rechargeable batteries is the driver of performance loss. Now, we know that view is backward. The buildup of mossy or tree-like structu
Adding more salt to a polymer-based electrolyte can keep batteries working without catching fire when heated to over 140 degrees F.
Rechargeable lithium-ion batteries power phones, laptops, other personal electronics and electric cars, and are even used to store energy generated by solar panels. But if the temperature of these batteries rises too high, they stop working and can catch fire.
share: Mapping Performance Variations to See How Lithium-Metal Batteries Fail Using high-energy x-rays, scientists probed different points across a high-energy-density lithium-metal battery—of interest for long-range electric vehicles—and used the data to identify the main failure mechanism April 19, 2021 Brookhaven Lab chemist and Stony Brook University (SBU) professor Peter Khalifah (middle) with SBU graduate students Zhuo Li (left) and Gerard Mattei (right) holding a "pouch cell" battery attached to a frame used for synchrotron x-ray studies. Note: This photo was taken prior to current...
SLAC, MIT, TRI researchers advance machine learning to accelerate battery development; insights on fast-charging Scientists have made a major advance in harnessing machine learning to accelerate the design for better batteries. Instead of using machine learning just to speed up scientific analysis by looking for patterns in data—as typically done—the researchers combined it with knowledge gained from experiments and equations guided by physics to discover and explain a process that shortens the lifetimes of fast-charging lithium-ion batteries. It was the first time this approach—known...