“…12,13 The diffraction peaks marked with dots at 35.4°, 38.6°, 53.4°, 61.4°, 66.1°, and 67.9° on the black pattern correspond to the (002), (111), (020), (−113), (−311), and (113) crystal planes of monoclinic CuO, respectively. 12–14 This means that Cu(OH) 2 nanowires were generated by the anodized method and that they were completely transformed into CuO nanosheets after 1500 CV cycles, which is consistent with the TEM results. However, because the characteristic diffraction peak is not sufficiently strong, the crystal quality of the CuO nanosheets is inferior to that of CuO nanosheets without Cu(OH) 2 nanowire precursors (Fig.…”