The Negative Difference Effect and Unipositive Mg+

Abstract

The Negative Difference Effect (NDE) for unipositive magnesium ion was analyzed, which helped to evaluate the expected rate of production of Mg and H. A simple way to describe the NDE was to consider a magnesium anode, which was in a de-aerated electrolyte and which subjected to an applied anodic galvanostatic current. It was also found that the quantity of Mg dissolved was greater than that can be explained coulometrically using the Faraday law on the assumption that Mg was oxidized to the dipositive magnesium ion. The unipositive Mg ion NDE mechanism proposed that the key aspects for magnesium corrosion in an aqueous solution included a partially protective surface film and the production of Mg presented a comprehensive treatments for the NDE.