With such a large array of problems associated with room temperature metal-air batteries, interest has increased in elevated temperature metal-air batteries. For example, lithium-air batteries have been reported to function at temperatures of ~100°C using a molten nitrate electrolyte . Another approach, the focus of this article, is to use a solid oxide fuel cell-type framework to allow for oxygen ions as the charge carrier, rather than metal cations, as shown in Figure . This framework is termed "solid oxide metal-air battery". In this architecture, oxygen ions transport through a solid electrolyte and combine with metal cations which have donated electrons to the external circuit. The resulting metal oxide is deposited at the interface between the metal and the solid electrolyte. However, as the metal oxide layer grows, there could be transport limitations either due to oxygen anion or metal cation transport though the growth front. Researchers have recently found that low specific energy metals, such as tin or antimony, can successfully cycle in solid oxide metal air battery systems. Otaegui et. al have shown that molten tin at 800°C can be used as fuel in a solid oxide battery and cycled for 4500 cycles with high coulombic efficiency . However, they could only access 10-20 microns of fuel, and used low power densities of ~10 mW/cm2. Javadekar et. al showed that liquid antimony at 700°C could also effectively be used in this type of architecture. In addition, the antimony-oxide discharge product is also a liquid at these temperatures. By mechanically mixing the liquid oxide mixture during cycling, they can remove the interfacial oxide, leading to much higher power densities of 240 mW/cm2 and conversion of >95% of the Sb to Sb2O3 .