A Li-O2/Air Battery Using an Inorganic Solid-State Air Cathode

The (-) lithium (Li) anodelorganic anolyte + inorganic catholytel solid-state cathode (+) Li-O-2/air battery based on an inorganic solid-state air cathode was fabricated with a simple method. The electrochemical performance and reaction products of the Li-O-2/air batteries under pure O-2 and ambient air were investigated, respectively. The inorganic Li-ion conductive solid-state electrolyte Li1.3Al0.3Ti1.7(PO4)(3) was stable during cycling and avoided the decomposition and volatilization problems that conventional organic electrolytes faced. Moreover, the porous air cathode provided a sufficient gas-phase O-2-transport channel, facilitating the achievement of a high capacity of 14192 or 7869 mA h g(-1) under pure O-2 or ambient air, respectively. Our results demonstrate that the Li-O-2/air battery using an inorganic porous air cathode has a great potential for practical application.