Electrochromism is a property of materials that undergoes a reversible transition from a colorless or transparent state to a colored state under the action of electric voltage or current. What makes electrochromic materials special is by controlling the voltage applied to the material. Among these electrochromic materials, metal oxides such as WO3 and NiOx are metal oxides that are frequently used. Electrochromic devices are devices that do not consume much energy and can save a lot of energy. A typical electrochromic device consists of five different thin film layers: an ionic conductive layer (electrolyte) and the transparent conductive oxides (ITO, FTO, ZTO etc.) cover electrochromic layers. In this study, instead of the traditionally used transparent conductive electrode ITO, ZTO/Ag/ZTO (Z=Zn2SnO4, ZAZ) electrode with high optical transmittance and electrical conductivity was used, thus cost-effective and more efficient electrochromic devices were produced. Here, 3 layers of thin film (WO3, Ta2O5, NiOx) coating on glass/ZAZ samples was grown by magnetron sputtering method at room temperature and the production parameters were optimized. WO3 and NiOx on ITO (Indium Tin Oxide) were measured, while Ta2O5 is used as solid-state electrolyte. Furthermore, WO3 and NiOx thin films were lithiated in 1 M LiClO4-PC electrolyte using a conventional three-electrode configuration. In the next step, to test the performance of WO3 and NiOx electrochromic device (glass/ZAZ/NiOx/Ta2O5/WO3/ZAZ) were tested.