The target of this study is the development of non-precious catalysts with high activity via simple and efficient synthesis method. The prepared OER electrocatalysts were characterized by various physicochemical analyses such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Furthermore, to investigate electrocatalytic properties of prepared catalysts, we carried out electrooxidation activity measurements such as cyclic voltammetry (CV), linear sweep voltammetry (LSV), long-term stability test, and electrochemical impedance spectroscopy (EIS). The synthesized CuCoO₄ series catalysts show a different tendency in physicochemical properties and OER activity with synthesis conditions as pH, heat treatment temperature, and drying method.