Used as a pigment in ceramics and glass to produce deep blue colors. Commonly found in cobalt blue glazes and in the production of blue-colored tiles and pottery. Acts as a catalyst in various chemical reactions, including the oxidation of hydrocarbons and in Fischer-Tropsch synthesis for converting syngas into liquid fuels. Employed in the manufacture of lithium-ion battery materials, where it contributes to the cathode structure, enhancing energy storage and battery performance. Utilized in solid oxide fuel cells as an electrode material due to its mixed ionic and electronic conductivity. Serves in the production of magnetic recording media and in the formulation of certain types of drying agents for paints and varnishes.