The nanoscale coatings of CexRu1-xO2 (x=0, 0.25, 0.5, and 0.75 mol%) with electrochemical activity were investigated. The characterization of the resulting materials was conducted by X-ray diffraction (XRD), scanning electron microscope (SEM), Brunauer-Emmett-Teller (BET), and cyclic voltammetry test (CV). It is shown through XRD analysis that there is no metallic ruthenium in those samples containing more than 50 mol% Ce. The results of SEM and BET show that the presence of CeO2 changes the morphology as well as the surface areas of the coatings in electrodes. The electrochemical activity also shows a strong dependence on the CeO2 content in the coatings under the CV test. The electrode of Ce0.5Ru0.5O2 has the highest surface area (19.13 m(2)/g) and the best electrochemical property (voltammetric charge of 180.64 mC/cm(2)) among the binary compositions.