Cobalt(II) tetrafluoroborate hydrate is widely used in electrochemical applications, particularly in the preparation of electroplating baths. It serves as a source of cobalt ions, which are essential for depositing cobalt coatings on various substrates. These coatings are valued for their hardness, wear resistance, and magnetic properties, making them suitable for use in the automotive, aerospace, and electronics industries. Additionally, it is employed in the synthesis of catalysts for organic reactions, where cobalt acts as an active center to facilitate chemical transformations. Its role in energy storage systems, such as batteries and supercapacitors, is also noteworthy, as it contributes to enhancing performance and stability.