Zeroing In On EV Batteries With More Storage & Faster Charging

Currently, the biggest hurdle for electric vehicles, or EVs, is the development of advanced battery technology to extend driving range, safety and reliability.

New research has shown how a novel lithium-based electrolyte material (Li9N2Cl3) can be used to develop solid-state batteries that charge faster and store more energy than conventional designs. Experiments revealed the solid-electrolyte was not only stable in normal air environments, but it also inhibited the growth of dendrites — dangerous, branchlike formations that cause batteries to catch fire.

Oak Ridge National Laboratory scientist Jue Liu conducted neutron experiments to observe how lithium moved through the material.

“The material’s dry air stability, efficient lithium-ion transport, and high compatibility toward metallic lithium are crucial advances. It’s the best of both worlds,” he said. “It offers all the performance benefits of liquid-electrolyte batteries that we use every day, but it’s safer and more reliable.”

Lithium-compatible and air-stable vacancy-rich Li₉N₂Cl₃ for high–areal capacity, long-cycling all–solid-state lithium metal batteries

Originally published on the Oak Ridge National Laboratory website. By Jue Liu, Neutron Scattering Scientist

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