POSITIVE ELECTRODE HAVING EXCELLENT ALKALI RESISTANCE, METHOD OF MANUFACTURING THE SAME, AND METAL-AIR BATTERY AND ELECTROCHEMICAL DEVICE INCLUDING THE POSITIVE ELECTRODE

A positive electrode includes a porous electroconductive metal oxide represented by Formula 1, wherein the electroconductive metal oxide has a specific surface area of about 0.01 m/g to about 1000 m/g, Formula 1 LRuO wherein, in Formula 1, L is at least one of a lanthanide element or an actinide element, and 0