Used primarily in organic synthesis as a catalyst, particularly in reactions involving the formation of carbon-carbon bonds. It is effective in promoting coupling reactions, such as the Ullmann reaction, where it aids in the formation of biaryl compounds. Additionally, it serves as a Lewis acid in various chemical transformations, enhancing the reactivity of certain substrates. Its application extends to the field of materials science, where it is utilized in the preparation of copper-based compounds and complexes. In electrochemistry, it can be employed as an electrolyte component in specialized batteries, contributing to improved ionic conductivity.