Studies on the anodic behavior of aluminum electrodes in alkaline solution

Abstract An efficient process for developing aluminum alloys for alkaline battery anodes is described. The addition of gallium to aluminum eliminates remarkably the anisotropy of aluminum, and thus renders its electrode potential more negative. The uniform distribution of alloying elements is an essential factor for lowering the corrossion rate of the alloy. The accumulation of an alloying element at intergranular bounderies, or the formation of a secondary phase that contains the element, will result in a rise in the corrosion rate of aluminum.