The newly engineered material is called lithium phosphorus oxynitride (LiPON).
“The new approach to making LiPON has also opened the door to using this solid-state electrolyte to enable lithium metal solid-state batteries that could work under minimal external pressure.”
The scientists also conceived a new methodology for producing LiPON film in a free-standing form by creating a flexible and transparent free-standing LiPON film compatible with a broad range of spectroscopic techniques. This method yielded fresh insights, thermal properties, and mechanical properties.
The research team also implemented the new free-standing version of the solid-state electrolyte in functional battery tests, reporting that the thin-film FS-LiPON promotes a uniformly dense lithium metal electrochemical deposition under zero external pressure. This result offers valuable hints regarding interface engineering in bulk solid-state batteries.
LiPON-based thin film batteries have many applications in various fields, such as wearables and other compact electronic devices with a gigantic market. “The FS-LiPON film produced in this work enabled in-depth discussions on interfacial chemistry, ion diffusion and interface engineering, which shed light on both the fundamentals and applications of LiPON materials, and could benefit the lithium solid-state battery development in many ways,” noted the press statement in its conclusion.
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