Multilayer ceramic film capacitors for high-performance energy storage: progress and outlook

Abstract

The dielectric capacitors, which has the characteristics of greater power density, have received extensive research attention due to its application prospects of pulsed power devices. Film capacitors are easier to...

Largely enhanced energy density of BOPP–OBT@CPP–BOPP sandwich-structured dielectric composites

“…When the external electric field is withdrawn, the dielectric depolarization allows the accumulated free charges on the electrode to be rapidly released. 63 The hysteretic response of P to E causes partial energy loss, 64 and the discharging efficiency (Z) can be calculated from the energy loss and charged energy density. Fig.…”

Enhancing the Energy‐Storage Density and Breakdown Strength in PbZrO3/Pb0.9La0.1Zr0.52Ti0.48O3‐Derived Antiferroelectric/Relaxor‐Ferroelectric Multilayers

“…Nowadays, dielectric thin‐film capacitors, which can store and release ultralarge energy densities in an extremely short time, are extensively investigated for applications in pulsed‐power electronic systems. [ 1–5 ] Such systems are used in many application fields, ranging from medical devices (such as pacemakers and defibrillators), consumer or industrial systems (camera flash, oil and gas exploration), transportation (hybrid electric vehicles), and in military applications (radar and high‐power microwave devices). [ 1,4–8 ] Recent studies focused on the enhancement of the energy‐storage density of dielectric thin‐film capacitors by using advanced materials and novel device architectures, [ 9,10 ] employing also ferroelectric (FE), antiferroelectric (AFE), or relaxor‐ferroelectric (RFE) materials.…”

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Such systems are used in many application fields, ranging from medical devices (such as pacemakers and defibrillators), consumer or industrial systems (camera flash, oil and gas exploration), transportation (hybrid electric vehicles), and in military applications (radar and high-power microwave devices). [1,[4][5][6][7][8] Recent studies focused on the enhancement of the energy-storage density of dielectric thin-film capacitors by using advanced materials and novel device architectures, [9,10] employing also ferroelectric (FE), antiferroelectric (AFE), or relaxor-ferroelectric (RFE) materials. In general, it is found that a large difference between maximum polarization (P m ) and remanent polarization (P r ), and a high electric breakdown field/breakdown strength (E BD ) are beneficial for high energy-storage densities.

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Nanocrystalline Engineering Induced High Energy Storage Performances of Fatigue-Free Ba2Bi3.9Pr0.1Ti5O18 Ferroelectric Thin Films

“…More recently, several improvements have been put forward to regulate the P – E characteristics of the ferroelectric film for capacitive energy storage, including defect, dead-layer engineering, strain, doping, multilayer, and process control. ,,− For instance, rare-earth La-doped Bi 5 Ti 3 FeO 15 thin films induced relaxation behaviors and inhibited grain growth that achieved a large W rec and a high η . Consequently, reducing the grain size of the materials is a validly avenue for improving energy storage performances because of enhanced E b ( E b ∝ 1/√ G , G is grain size).…”