ELECTRODES WITH ACTIVE MATERIAL PARTICLES HAVING MIXED IONIC AND ELECTRONIC CONDUCTING LAYERS THEREON

A solid-state battery includes an anode, a cathode, and a solid electrolyte between the anode and cathode. The anode or cathode includes bonded active material particles having thereon a mixed ionic and electronic conducting conformal interface layer that provides a transport path for ions and electrons during operation of the solid-state battery, and lacks solid electrolyte particles.