Nickel citrate hydrate is widely used in the electroplating industry as a key component in nickel plating solutions. It helps in the deposition of a smooth, uniform, and corrosion-resistant nickel layer on various substrates, such as metals and plastics. This application is particularly valuable in the automotive, aerospace, and electronics industries for enhancing durability and appearance. Additionally, it serves as a catalyst in organic synthesis, facilitating various chemical reactions, including hydrogenation and polymerization. In the field of energy storage, it is employed in the production of nickel-based batteries, contributing to improved performance and longevity. Its chelating properties also make it useful in wastewater treatment for heavy metal removal.