5 天之前· These synergistic effects culminate in an exceptional energy storage density of ~10.24 J cm −3. Our findings establish that engineering highly dynamic heterogeneous nano-microstructures represents a transformative approach for designing advanced lead-free dielectric materials with superior energy storage capabilities.
The linear dielectric CaTiO 3 is utilized to enhance the energy storage efficiency of the system. At the same time, a small amount of sintering aid is added to optimize the sintering temperature. The combined effect of these three components is to improve the energy storage characteristics of NN.
A new strategy for achieving excellent energy storage property of NN-based ceramics was proposed. A modified two-step sintering method is employed to sustain the high Pmax of BNT under low electric field.
These excellent results not only demonstrate the great potential of NN-based ceramics for dielectric energy storage applications, but also validate the approach proposed in this study to achieve superior energy storage performances.
It was noted that the incorporation of NaNbO3 enhances the property of energy storage by elevating the breakdown strength and causing the creation of an ergodic relaxation state. The effective energy storage density (Wrec) and the energy storage efficiency (η) are 1.09 J/cm3 and 85%, respectively.
In this work, a multiscale manipulation strategy was employed by integrating polar-nanoregions (PNRs) regulation at the nanoscale and grain-structure regulation at the microscale to enhance energy storage performance of NaNbO 3 -based ceramics.
This study explores high-performance nanograined ceramics with excellent energy storage, ultrafast discharge, and temperature-stable, as ideal for power electronics and pulsed power applications.
Na 0.7 Bi 0.1 Nb 0.9 Ta 0.1 O 3 ceramics with an uncomplicated chemical composition and prominent properties demonstrate promising applications in pulsed power systems and the synergistic optimization strategy in this study
It was noted that the incorporation of NaNbO3 enhances the property of energy storage by elevating the breakdown strength and causing the creation of an ergodic relaxation state. The effective energy storage density
Ultrahigh energy storage and giant power density combined in novel environmental-friendly sodium-niobate-based lead-free ceramics for energy storage applications.
Ultrahigh energy storage and giant power density combined in novel environmental-friendly sodium-niobate-based lead-free ceramics for energy storage applications.
Na 0.7 Bi 0.1 Nb 0.9 Ta 0.1 O 3 ceramics with an uncomplicated chemical composition and prominent properties demonstrate promising applications in pulsed power systems and the synergistic optimization strategy in this study offers an important reference for future lead-free ceramic capacitors.
NaNbO 3 -based ceramic materials, as representatives of the lead-free antiferroelectric system, show very great potential for energy storage due to their wide bandgap (~3.45 eV), high polarization strength (~40 μC▪cm −2) and small bulk density (~4.55 g▪cm −3) 16.
Although NaNbO 3 -based antiferroelectric ceramic is considered as a potential lead-free energy storage material, the field-driven antiferroelectric-ferroelectric phase transition greatly hinders its energy storage performance. Here the strategy of synergetic phase-structure construction and relaxation regulation is proposed to solve this issue.
It was noted that the incorporation of NaNbO 3 enhances the property of energy storage by elevating the breakdown strength and causing the creation of an ergodic relaxation state. The effective energy storage density (Wrec) and the energy storage efficiency (η) are 1.09 J/cm 3 and 85%, respectively.
. This study explores high-performance nanograined ceramics with excellent energy storage, ultrafast discharge, and temperature-stable, as ideal for power electronics and pulsed power applications.
In the research scope of dielectric ceramic capacitors, lead-free energy storage ceramic NaNbO₃ (NN) has become a key focus for researchers due to its higher band gap, which can provide a relatively large breakdown field strength [3, 4, 5], as well as advantages such as simple manufacturing processes and low costs.
The proposed strategy can be utilized to design high-performance energy storage dielectrics and other related functionalities. The authors realize the enhancement of energy storage performance of NaNbO3-based multilayer ceramic capacitors guided by phase-field simulation through the design of directional slush-like structures.
