Nickel ammonium sulfate is widely used in electroplating processes to deposit a layer of nickel onto various metal surfaces. This application enhances the durability, corrosion resistance, and aesthetic appeal of items such as automotive parts, machinery components, and household fixtures. It is also employed in the production of catalysts for chemical reactions, particularly in hydrogenation processes, where it helps facilitate the addition of hydrogen to other compounds. Additionally, the compound finds use in the manufacturing of rechargeable batteries, contributing to the development of efficient energy storage systems. Its role in analytical chemistry as a reagent for identifying specific ions further underscores its versatility in industrial and laboratory settings.