Used in electroplating to produce wear-resistant and decorative cobalt coatings on metals. Serves as a precursor in the synthesis of catalysts for petroleum refining and chemical manufacturing. Employed in rechargeable battery materials, especially in lithium-ion battery cathodes. Acts as a drying agent in paints and varnishes due to its catalytic properties. Utilized in animal feed as a source of essential cobalt for ruminant nutrition. Applied in the production of pigments and dyes for ceramics and glass. Also used in vitamin B12 supplements and as a nutrient in cell culture media.