Cu(II) oxide nanocorals were synthesized for the first time from a lyotropic liquid crystalline system formed from triton X-100 and water. The nanocorals were prepared based on a simple precipitation route, and then characterized by field emission scanning electron microscopy and X-ray diffraction patterns. The nanocorals provided a porous ensemble which comprised adhered nanorods of <50 nm in diameter. XRD pattern confirmed the crystalline structure of CuO with a grain size of approximate to 30 nm. Electrochemical behavior of the nanocorals was preliminary evaluated in an alkaline solution, and they represented a potential for hydrogen peroxide determination.