Enhanced dielectric breakdown strength and energy storage density in lead-free relaxor ferroelectric ceramics prepared using transition liquid phase sintering

Abstract

Lead-free relaxor ferroelectric ceramics have been widely explored for high power energy storage applications because of their high polarization saturation and low remnant polarization.

Lead‐free (K,Na)NbO3‐based ceramics with high optical transparency and large energy storage ability

“…On the basis of the above analysis, the high electric energy storage density W total can be attributed to a high dielectric breakdown strength (DBS) and a large polarization difference ( P s ‐ P r ) . Previous research reveals that a small grain size and dense microstructure lead to high DBS …”

“…Previous research reveals that a small grain size and dense microstructure lead to high DBS. 43 To investigate the properties of the energy storage, the P-E hysteresis loops of the KNN-xSZN ceramics are measured at room temperature, and the results are shown in Figure 7A. The ceramics with Sr(Zn 1/3 Nb 2/3 )O 3 doping exhibit slim hysteresis loops, which is a characteristic of relaxor-like behavior.…”

Multifunctional antiferroelectric MLCC with high‐energy‐storage properties and large field‐induced strain

“…Because of the ever increasing complexity of the electronic devices, there is a strong demand for materials with multiple functions. Recently, lead‐based antiferroelectric (AFE) materials, as a kind of potential multiple functional electronic materials, have attracted great attention for their potential applications in high‐energy‐storage capacitors, microactuators, pyroelectric security sensors, cooling devices, multiferroic heterostructures, and pulsed power, owing to their unique electric‐field‐induced phase switching process . Currently, the studies on lead‐based AFEs are mainly focused on the bulk ceramics and thin films.…”

“…Recently, lead-based antiferroelectric (AFE) materials, as a kind of potential multiple functional electronic materials, have attracted great attention for their potential applications in high-energy-storage capacitors, microactuators, pyroelectric security sensors, cooling devices, multiferroic heterostructures, and pulsed power, owing to their unique electric-field-induced phase switching process. [1][2][3][4][5][6] Currently, the studies on lead-based AFEs are mainly focused on the bulk ceramics and thin films. It is well-known that the low electric breakdown field for the bulk ceramics often leads to inferior final properties, such as small energy-storage density and low cooling coefficient.…”

Recent progress of ecofriendly perovskite-type dielectric ceramics for energy storage applications

“…A large W R of $2.6 J/cm 3 and a moderate η of $ 73.2% have been achieved with an electric field of 400 kV/cm. 73 Later on this group designed a new 0.9(K 0:5 Na 0:5 ÞNbO 3 -0.1Bi(Mg 2=3 Nb 1=3 ÞO 3 composition to control grain size and enlarge saturated polarizations. Results demonstrated that a giant W R of $ 4.08 J/cm 3 with η of $ 63% existed under an electric field of 300 kV/cm.…”