Used as a pigment in ceramics and glass to produce blue, green, or red colors depending on the concentration and base material. Acts as a catalyst in chemical reactions, especially in organic synthesis and oxidation processes. Employed in the production of rayon and other textiles as a component in processing solutions. Utilized in batteries and supercapacitors, including lithium-ion batteries, due to its electrochemical properties. Added to fertilizers and animal feed in controlled amounts as a source of copper for nutritional supplementation. Applied in antimicrobial coatings and materials, such as paints and wood, because of its ability to inhibit bacterial and fungal growth. Used in gas sensors due to its electrical properties that change upon exposure to certain gases. Used in welding fluxes and metal treatment processes to improve performance and stability.