Future prospects: ceramic part

Dielectric capacitors, featured in high charge -discharge rate, low cost and long cyclic lifetime, play an important role in electrical and electronic applications. Among various dielectrics, ceramics and polymers are mainstream materials dominating the dielectric capacitors. Many modern applications including hybrid vehicles and power converters require the capacitors to work under high temperature, which poses challenges for polymer capacitors with low melting/ glass -transition temperature [1], while ceramic capacitors can be operated at much higher temperature than polymer capacitors due to the inorganic nature of ceramics. Although the ceramic capacitors are suitable for high -temperature energy storage applications, there are still a lot of challenges such as low energy density, which will be discussed in details in Section 12.2. The perspectives and future development trends for dielectric capacitors are proposed.