Ceramic-based dielectrics for electrostatic energy storage applications: Fundamental aspects, recent progress, and remaining challenges

Achieving Ultrahigh Energy Storage Density of La and Ta Codoped AgNbO3 Ceramics by Optimizing the Field-Induced Phase Transitions

“…The requirements for energy storage materials are increasing with the continuous development of energy technologies and electronic devices. Dielectric capacitors, as an important electroactive component of high-power energy storage devices, exhibit faster charge/discharge rates and higher power densities compared with electrochemical energy storage devices. , However, the energy storage density and energy storage efficiency of dielectric capacitors are relatively low, restricting their wide use in high-power pulse applications. − …”

“…Dielectric capacitors, as an important electroactive component of high-power energy storage devices, exhibit faster charge/discharge rates and higher power densities compared with electrochemical energy storage devices. 1,2 However, the energy storage density and energy storage efficiency of dielectric capacitors are relatively low, restricting their wide use in high-power pulse applications. 3−5 The energy storage characteristics of a dielectric capacitor can be described by the energy storage density (W st ), the recoverable energy storage density (W rec ), and the energy storage efficiency (η) as follows 6,7…”

Giant comprehensive capacitive energy storage in lead-free quasi-linear relaxor ferroelectrics via local heterogeneous polarization configuration

“…Unfortunately, state-ofthe-art lead-free dielectric ceramics are suffering from either low W rec /h or severe thermal stability of the W rec /h, greatly restricting their practical applications. 3,6 In addition, the hardness of dielectric ceramics, which is tightly connected with microstructural features (density, grain size, etc. ), 23,24 is also a gure of merit that directly affects the service life of devices in practical applications.…”

“…A dielectric-based solid-state capacitor, as a kind of passive component in electronics, shows distinctive features of higher power density (∼10 4 to 10 5 W kg −1 ) and faster charging/discharging character (∼μs) and possesses great prospects in the electrical vehicle and pulsed power application fields. 1–3 Considering the manufacturing cost and lifetime reliability in practical applications for dielectric capacitors, a ceramic dielectric capacitor is, therefore, emerging as a key enabler for competitive energy storage materials, particularly for the process of industrialization owing to its mature/simple production process and low cost. 4,5 Especially driven by sustainable development and the urgency of environmental protection, lead-free dielectric capacitors have drawn widespread interest.…”

Interfacial 2D Montmorillonite Nanocoatings Enable Sandwiched Polymer Nanocomposites to Exhibit Ultrahigh Capacitive Energy Storage Performance at Elevated Temperatures

“…[ 1 , 2 , 3 ] Compared with ceramic counterparts, polymer dielectrics possess inherent advantages of high voltage endurance, scalability, low cost, and high breakdown strength. [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ] However, they suffer from low operating temperatures and thus fall short of the demands for electrical energy storage and conversion in harsh environments. [ 13 , 14 ] For example, biaxially oriented polypropylene (BOPP), the state‐of‐the‐art commercially available polymer dielectric used in the power inverter, can only reliably operate at temperatures below 105 °C, while the engine compartment temperature in electric vehicles can exceed 120 °C.…”