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X-ray Tomography Lets Researchers Watch Solid-State Batteries Charge, Discharge

Detailed 3D data could help improve reliability and performance

John Toon
Thu, 04/08/2021 - 12:02
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Using X-ray tomography, a research team has observed the internal evolution of the materials inside solid-state lithium batteries as they were charged and discharged. Detailed 3D information from the research could help improve the reliability and performance of the batteries, which use solid materials to replace the flammable liquid electrolytes in existing lithium-ion batteries.

The operando synchrotron X-ray computed microtomography imaging revealed how the dynamic changes of electrode materials at lithium/solid-electrolyte interfaces determine the behavior of solid-state batteries. The researchers found that battery operation caused voids to form at the interface, which created a loss of contact that was the primary cause of failure in the cells.

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