Used in electroplating processes, particularly in automotive, electronics, and other industries requiring high corrosion resistance and decorative nickel coatings on metals. Commonly employed in the production of batteries, especially nickel-cadmium and nickel-metal hydride types. Serves as a catalyst precursor in industrial chemical reactions and as a mordant in textile dyeing to fix colors. Also utilized in the preparation of other nickel compounds, in laboratory settings as a source of nickel ions, and as a nickel source in fertilizers for plants deficient in nickel, particularly in specialized agricultural systems.