Li∕Polymer Electrolyte∕Water Stable Lithium-Conducting Glass Ceramics Composite for Lithium–Air Secondary Batteries with an Aqueous Electrolyte

A water-stable Li metal anode with water-stable lithium-conducting glass ceramics, (LTAP), and a lithium-conducting polymer electrolyte, , was proposed as the lithium anode for lithium–air batteries with an aqueous solution at the air electrode. LTAP was unstable when in direct contact with Li metal, and the cell resistance of Li∕LTAP∕Li rapidly increased as a function of the contact time. The symmetrical cell showed no change in the total resistance (around at ) over a period of . The membrane served as a protective interlayer to suppress the reaction between the water-stable glass ceramics LTAP and Li metal effectively. The ∕LTAP∕aqueous air cell showed a stable open-circuit voltage of at for . The open-circuit voltage was comparable with that calculated from the cell reaction of . The cell exhibited a favorable discharge and charge performance at and .