X-Ray Video Looks Inside Live Working Batteries

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Powerful X-ray images are showing for the first time what happens inside a working battery as it discharges power, and it could lead to improvements for a new type of battery that promises better storage capacity at a lower cost.

Electric cars and other technologies use lithium-ion batteries, which are useful in part because of their high energy density. Cheaper lithium-sulfur batteries could have even higher densities, but they stop working after only a few charge-discharge cycles. Researchers at the SLAC National Accelerator Laboratory are watching them work to determine how they could be improved.

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