Used in electroplating baths to produce smooth, corrosion-resistant cadmium coatings on metals, especially in aerospace and automotive industries. Employed as a stabilizer in pigments and phosphors for television and display screens due to its luminescent properties when doped with activators. Serves as an electrolyte component in nickel-cadmium (Ni-Cd) rechargeable batteries, enhancing conductivity and charge efficiency. Utilized in laboratory settings for sulfate standardization and in the preparation of other cadmium compounds. Also applied in some types of solar cells, such as cadmium telluride (CdTe) thin-film solar cells, and photoelectric devices as a precursor material. Due to the toxicity of cadmium, its use requires strict controls to prevent health and environmental hazards.