These discs were used for testing the researchers’ processing method for solid-electrolyte batteries. On the left, a sample of the solid electrolyte itself, a material known as LLZO. At center, the same material coated with the cathode material used in their tests. At right, the LLZO material with a coating of gold, used to facilitate measuring its electrical properties. Photo: Pjotrs Žguns
David L. Chandler writes about energy, engineering, and materials science for the MIT News Office.