In　this　work,　an　Al-Mn-Sb　anode　has　been　prepared　for　the　alkaline　Al-air　battery.　The　energy　efficiency　and　corrosion　behaviors　are　investigated　in　details.　The　results　indicate　that　the　prepared　Al-Mn-Sb　anode　exhibits　high　discharge　voltage　and　peak　power　density　of　1.206　V　and　96　mWcm−2,　respectively,　with　a　small　degree　of　polarization　at　high　discharge　rate　(80　mAcm−2).　It　can　also　output　high　energy　density　and　considerable　anodic　utilization　of　3236　mWhg−1　and　90.0%,　respectively.　Such　high　discharge　performance　should　be　attributed　to　the　micro-nano　scale　precipitates　generated　by　the　simultaneous　addition　of　Mn　and　Sb,　effectively　activating　the　grain　boundaries.　The　Al-Mn-Sb　anode　can　be　a　desirable　candidate　for　high　energy　efficiency　anodes　dedicated　to　high-performance　Al-air　battery　cells　meeting　the　demands　of　high-power/energy　applications.　©　2020　Elsevier　B.V.