DIFFUSION LAYER AND OXYGEN ELECTRODE COMPOSITE LAYERS OF POLYMER ELECTROLYTE MEMBRANE WATER ELECTROLYSIS APPARATUS AND METHOD FOR PREPARING THE SAME AND POLYMER ELECTROLYTE MEMBRANE WATER ELECTROLYSIS APPARATUS USING THE SAME

摘要

The present invention is a diffusion layer and an oxygen electrode composite layer of a polymer electrolyte membrane water electrolysis device that simultaneously serves as a diffusion layer and an oxygen electrode, comprising: a porous titanium (Ti) layer; And an iridium oxide (IrO ₂ ) layer electrolytically plated on the porous Ti layer. The IrO ₂ layer is uniformly plated on the porous Ti layer through an electrolytic process. The electroplated IrO ₂ layer is a catalyst layer for oxygen evolution reaction (OER) on the surface of the Ti layer, as well as corrosion preventing oxidation of the inner Ti layer. As a preventive layer, it can perform various roles.