Study on Dielectric Material for Generating Ozone by Dielectric Barrier Discharge

Dielectric barrier discharge is mainly used to produce ozone in industry. The dielectric plays an important role in this form of discharge. Because of their good physical and chemical properties, some kinds of ceramic material and enamel material have been studied and applied as the dielectric. Experiments show that as frequency increases, dielectric constant and loss anlge tangent of all ceramic samples decrease. For samples with larger dielectric constant, dielectric constant decreases faster, and the magnitude of the decrease is larger. When the frequency is high, dielectric constant and the loss angle tangent basically stabilize. At the same frequency, the loss angle tangent of ceramic samples with high dielectric constant is also higher. The dielectric constant and loss angle tangent of different ceramic samples differ greatly at low frequency, while the difference is relatively reduced at high frequency. From the perspective of electrical performance, ceramic dielectrics are not much superior to enamel dielectrics. Enamel material is more advantageous than ceramic material.