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In order to understand when to replace the electrolyte of the Mg-Air battery, the effect of the surface area of Metal anode according to the consumption. For each capacity of the Mg-Air battery pack on the electrolyte concentration was calculated, the timing of electrolyte replacement was predicted.

A large number of researchers devotes deep study to reducing the contact resistance and improving the durability of air cathode. Air cathode consists of gas diffusion layer, current collector and catalytic layers. The network structure (gas diffusion layer, GDL) of Air cathode plays an important role in metal-air battery. This GDL makes the air-cathode semi-permiable. It means that H2O does not pass through GDL layer but O2 moleecules can pass the layer. For that reason, the optimization of sintering condition is very important process in manufacturing Air cathode. This article is about the dependence of discharge property of magnesium air-battery to its sinter-ability. Thus in order to observe any changes in the discharge property, sinter-ability, a cost-effective method was designed in the air cathode production.

The theoretical discharge energy density of the Mg-Air battery, which is attracting attention as a next-generation battery, was modelled and the efficiency of electrolyte circulation was compared. After that, 180kWh class power facility was built using Mg-Air batteries, and the effect of electrolyte removal according to the circulation method was compared and investigated.