Grain-orientation-engineered multilayer ceramic capacitors for energy storage applications

Dielectric films for high performance capacitive energy storage: multiscale engineering

“…50 However, this is at the sacrifice of fabrication efficiency. A "layer-by-layer" deposition (LLD) strategy was proposed recently, which combines (1) [17][18][19][20][21][22][23][24][25][27][28][29][30][31][32][33][34][35][36][37][38] quencies (e.g. ∼50 Hz) to form a monolayer (unit-cell thick) in 10-20 ms, and (2) a long interval (>1 s) for full relaxation and reconstruction of the monolayer towards stable structure (Fig.…”

“…Porosity is suppressed, and composition homogeneity is improved, giving rise to E b of near 1 MV cm −1 and the highest U e of 21 J cm −3 . [22][23][24][25] On the other hand, polymer dielectrics, e.g., polypropylene and poly(vinylidene fluoride), possess very high E b of ∼5 MV cm −1 but weak polarization (ε r < 10, P < 10 μC cm −2 ), leading to unsatisfactory energy performance. 26 By introducing high-ε r ceramic fillers and modifying the filler composition, morphology and distribution, polymer-based composite dielectrics can realize U e of 10-30 J cm −3 .…”

Additive Manufacturable Materials for Electrochemical Biosensor Electrodes

“…In electrical circuits, ceramics are widely used as dielectrics where although no or little current is passed through, the electric charges are polarized, and in turn, electrical energy is internally stored. [ 70 ] Ceramics can also be doped with either p‐type or n‐type dopants that can impart conductivity ranging from semiconductive to conductive. [ 71,72 ] The interest in biosensors lies in extrinsic semiconductors, which are materials that are not inherently semiconducting and thereby requiring a dopant.…”

In Situ Observation of Point‐Defect‐Induced Unit‐Cell‐Wise Energy Storage Pathway in Antiferroelectric PbZrO3

“…Dielectric capacitors, characteristic of ultrafast charging/discharging rate, high energy‐storage density, voltage endurance, and good reliability, are receiving a great deal of attention for their potential applications in electronic devices and electrical power systems. [ 1 ] Towards further improving the recoverable energy density U e = ∫ EdP ( Figure a), two complementary approaches are mainly implemented so far: the macroscopic one by developing novel material design strategies such as polymorphic nanodomain [ 2 ] and grain‐orientation‐engineered multilayers, [ 3 ] and the microscopic one by unveiling the energy‐storage pathway and mechanism. [ 4,5 ] Obviously, in situ revealing the energy‐storage pathway provides a fundamental perspective to elaborate the structure – property relationship.…”