Inorganic Dielectric Materials for Capacitive Energy Storage

The research and development of novel energy storage materials is the key priority in the development of advanced capacitors. The dielectric materials for traditional dielectric capacitors can be simply categorized into polymers and ceramics. Ceramic dielectric materials have ultrahigh dielectric constant, high modulus, and good high-temperature consistency, and are widely used in various electronic devices. In this chapter, we overview the research and development of ceramic energy storage materials. Three types of ceramic materials best suited for energy storage are described in detail: linear dielectric ceramics, relaxation ferroelectric ceramics, and antiferroelectric ceramics. Meanwhile, multilayer ceramic capacitors (MLCCs) are also the focus of this chapter. MLCCs are widely used in electronic products, such as cell phones, scanners, and computers because of their small sizes, low dielectric loss, high specific capacitance, and low price. The rapid development of MLCCs and their good application prospects have greatly promoted the development of related dielectric materials.