Research Team Supports Isostatic Pressing For Solid-State Battery Manufacturing
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Isostatic pressing applies consistent heat and pressure from all directions across a battery component within a chamber. Credit: Andy Sproles/ORNL, U.S. Dept. of Energy, ORNL researchers recommend attention be given to the little-studied isostatic pressing approach. This process uses fluids and gases like water, oil or argon inside a machine to apply consistent pressure across a battery component, creating a highly uniform material.
Among the promising results, isostatic pressing was found to be extremely successful at low temperatures and with soft electrolyte materials, which are easier to process and which have favorable crystal structures for ion movement. Previously isostatic pressing of batteries had been done mostly at extremes: very high temperatures or at room temperature, but not in between.
needs to be perfected for large-scale manufacturing. “Make no mistake, all solid-state batteries are on a journey for the long haul,” he said. “But the isostatic pressing technology, if scalable, would provide a way to assemble the battery layers without impractical external pressures.” In the ACS Energy Letters paper, Dixit’s team stressed the importance of pursuing a solid-state battery that can be scaled up for manufacturing. “Effectively addressing this challenge would leapfrog present-day battery technology into the next decades by enabling energy-dense solid-state batteries to meet the burgeoning demands of portable electronics, grid storage, electric vehicles and even applications,” they wrote.
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