WATER SPLITTING METHOD, WATER SPLITTING DEVICE AND ANODAL ELECTRODE FOR OXYGEN GENERATION

摘要

PROBLEM TO BE SOLVED: To provide a water splitting method and water splitting device splitting water constantly for a long term.SOLUTION: In a water splitting method, a water splitting device comprising a cathodal bath, an anodal bath, a proton permeable membrane, a cathodal electrode having metal or a metal compound, and an anodal electrode having a nitride semiconductor layer is prepared. Then, the anodal electrode is irradiated with light and water is split on the anodal electrode to generate oxygen. The anodal electrode has a cobalt layer composed primarily of CoOon the surface of the nitride semiconductor layer.SELECTED DRAWING: Figure 1A