Used primarily in the production of nickel-based batteries, especially in nickel-metal hydride (NiMH) and nickel-cadmium (NiCd) battery systems, where it serves as a cathode material due to its electrochemical activity. It plays a role in electrocatalysis, particularly in oxygen evolution reactions during water electrolysis, making it valuable in hydrogen production technologies. Also utilized in ceramic colorants and as an oxidizing agent in certain chemical synthesis processes. Its high oxidation state contributes to strong oxidizing properties, useful in specialized industrial oxidation reactions. Additionally, it finds applications in electrochemical sensors and in high-temperature, corrosion-resistant coatings.