The hydrazine oxidation reaction (HzOR) is a promising alternative to the oxygen evolution reaction (OER) in electrolyzers due to its lower oxidation potential than water, which significantly reduces energy demands and enhances hydrogen production efficiency. Incorporating high-valent 5d metals into 3d metal hydroxides has shown great potential for enhancing water-splitting performance through strong 3d-2p-5d orbital interactions, improving charge transfer, intermediate adsorption, and reducing overpotentials. This study showcases an innovative approach to enhance the electrocatalytic performance of Co(OH)