Electric Dipoles and Ionic Conductivity in a Na+ Glass Electrolyte

Glass, unlike a crystalline solid, contains atoms and molecules that do not occupy fixed positions. A glass that contains molecules that attract one another can age with time. We report such a glass that contains A2O and (OA)− electric dipoles (A = Li or Na). At a temperature T 10−2 S cm−1 and a huge dielectric constant that makes it suitable for many applications, including safe rechargeable batteries of high energy density and long cycle life.