Used as a catalyst in organic synthesis, particularly in coupling reactions (e.g., Chan-Lam or Ullmann-type) and oxidation processes. Serves as a source of Cu²⁺ ions in electroplating baths to deposit copper films on various substrates. Employed in the preparation of other copper-based compounds and coordination complexes. Its fluoroborate anion contributes to good solubility and stability in aqueous and non-aqueous media, making it suitable for use in chemical reactions requiring mild Lewis acidity. Also utilized in some industrial processes involving metal finishing and surface treatment.