Magnesium oxide emerges as a promising protective coating for sulfide solid electrolytes

The success of a promising class of next-generation batteries may hinge on something almost impossibly thin: a coating just a nanometer thick—roughly 100,000 times thinner than a human hair. In new research, scientists at the U.S. Department of Energy's (DOE) Argonne National Laboratory combined computation and experiment to find candidate protective coatings for sulfide-based solid electrolytes and uncover what makes those coatings work.

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