Abstract
Lithium-air battery attracts great attention because of its high energy density. The great advantage of an aqueous type is that discharge reaction products can be soluble in electrolytes. However, it precipitates in the positive electrode when the concentration of the electrolyte excesses its solubility. It is considered that the discharge reaction products cause cell performance degradation and its precipitation mechanism needs to be clarified. In this study, we observed the discharge reaction product in the positive electrode by using low energy X-ray computed tomography (CT). As a result, it was clearly shown that the discharge reaction products were mainly produced in the positive electrode near the electrolyte.
