Cobalt(IV) sulfide is primarily utilized in advanced material sciences, particularly in the development of high-performance batteries and energy storage systems. Its unique electrochemical properties make it a promising candidate for use in lithium-ion and sodium-ion batteries, where it can enhance energy density and improve charge-discharge cycles. Additionally, it is explored in catalysis, especially in processes like hydrogen evolution and oxygen reduction reactions, which are critical for fuel cell technologies. Its semiconducting characteristics also make it suitable for applications in optoelectronics and photovoltaic devices, contributing to the advancement of solar energy conversion systems.