The present invention relates to an oxygen evolution reaction (OER) electrode, wherein the OER electrode according to the present invention comprises: a first active metal substrate; And nanometer order doedoe fine particles having a diameter of (nanometer order) to 10 1 nanometer order (10 1 nanometer order) are randomly agglomerated, the surface layer having a porous by irregular aggregation; comprises, the fine particles of the second active It is a metal-containing hydroxide.
展开▼
