Cu8O

Cu8O is a copper oxide ceramic compound that exists in the copper oxide family, representing a specific stoichiometric phase in the Cu–O system. While less common than Cu2O or CuO, Cu8O occupies a niche role primarily in research and materials science investigations into mixed-valence copper oxides and solid-state chemistry. Industrial interest in this phase is limited; it is most notable in fundamental studies of copper oxidation behavior, catalytic applications, and semiconductor physics rather than in mainstream engineering applications.