Application of Various Iron-Based Plated Electrodes Under Different Plating Conditions As Air Electrodes for Metal-Air Batteries

The purpose of this study was to investigate the difference in oxygen evolution and reduction reaction activity by changing the preparation conditions of Fe-Ni-W alloy plating. We produced Fe-Ni-W alloy plating that changed the concentration of Fe and W ions in the bath. It was described that the activity for oxygen evolution reaction (OER) depended on the containing W amount in the film, and also depended on the concentration of complex agent, Na3Cit･2H2O in the bath. When the concentration of Na3Cit･2H2O in the bath increased, the content of Fe-W in the film increased, and the Ni content decreased. It was found that the plated electrode with morphological large surface area showed good performance. In the case of oxygen reduction reaction (ORR), it was described that the activity depended on the contents of W in the film.