“…However, the obstacles for a high battery performance lie in the high lithium ion transport resistance in the solid-state electrolyte membrane and limited reaction boundaries among the solid-state electrolyte, the air electrode, and gaseous oxygen. Till now, various types of solid-state electrolyte have been proposed and tested, including NASICON-type glass ceramic [127][128][129][130][131][132], single-crystalline silicon membranes [133], and polymer-based membranes [134], while a membrane with a high lithium ion conductivity is in an urgent demand. To extend the reaction boundaries, novel air electrode architectures should also be developed [135].…”