The purpose of this study is to improve the physical properties of photocatalyst ceramic coatings on flexible plasma electrodes in order to improve the decomposition efficiency of harmful gas. TiO₂, ZrO₂, and ZrOH were used as the photocatalyst materials, TSR116 was used as a flexible silicone binder, and Xylene was used as a dispersing agent. As the ratio of TSR116 increased, the surface adhesion and crack resistance improved, but the photocatalyst material exposed to the surface decreased. Increasing the xylene ratio as a diluent to adjust the ratio of TSR116 increased the exposure of the photocatalyst on the surface but resulted in poor adhesion and surface cracking. The surface uniformity and cracking of the varying ratios of TSR116, xylene, and TiO₂ were analyzed by scanning electron microscopy. High surface uniformity was found to improve the stability and efficiency of the surface of flexible plasma electrodes.