Corrosion propertieso f A1-0.3Ga-0.3SnA, 1-0.3Mn-0.3Gaa, nd Al-0.3Mn-0.3Sn alloys were examinedt o develop an anode material for Al-air battery with alkaline aqueous or ethanol electrolyte. The results of potentiodl,namic polarization tests showed that the electrode potential of the Al alloys were lower than the pure Al, implying the ce11 voltage can be increased by using one of these alloys for an anode in 4 M KOH aqueous solution. The corrosion rate appeared to be increased by alloying Ga but to be reduced by Sn and Mn in the aqueous solution. The ethanol solution is expected to improve the cell performance in that the electrode potential and the corrosion rate of Al were lower in ethanol solution than in aqueous solution. However the Al-(Ga, Sn, Mn) alloys are not favorable in ethanol solution because of the high potential and corrosion rate.