Used as a pigment in ceramics and glass due to its ability to produce dark blue to black colors during firing. Commonly employed in the production of ferrites for electronic components, especially in soft magnetic materials used in transformers and inductors. Acts as a catalyst in various oxidation reactions, including the conversion of carbon monoxide to carbon dioxide in gas purification systems. Utilized in electrode materials for batteries and fuel cells because of its electrochemical activity and stability. Also applied in the synthesis of cobalt-based mixed metal oxides for industrial catalysis.