Systematical investigation on energy‐storage behavior of PLZST antiferroelectric ceramics by composition optimizing

Abstract

Featured with high polarization and large electric field‐induced phase transition, PbZrO3‐based antiferroelectric (AFE) materials are regarded as prospective candidates for energy‐storage applications. However, systematical studies on PbZrO3‐based materials are insufficient because of their complex chemical compositions and various phase structures. In this work, (Pb0.94La0.04)(Zr1‐x‐ySnxTiy)O3 (abbreviated as PLZST, 0 ≤ x ≤ 0.5, 0.01 ≤ y ≤ 0.1) AFE system was selected and the energy‐storage behavior was regulated. It is found that low Ti content benefits to obtain satisfactory electric breakdown strength, realizing high energy‐storage density. With Sn content increasing, the electric hysteresis decreases gradually, which is beneficial to improve energy conversion efficiency. As a result, a large recoverable energy‐storage density of 9.6 J/cm3 and a high energy conversion efficiency of 90.2% were achieved in (Pb0.94La0.04)(Zr0.49Sn0.5Ti0.01)O3 ceramic. This work reveals energy‐storage behavior of PLZST AFE materials systematically, providing reference for performance tailoring and new material designing in energy‐storage applications.

Tunable Domain Switching Features of Incommensurate Antiferroelectric Ceramics Realizing Excellent Energy Storage Properties

“…Also, in the actual charging–discharging operation, the giant discharge energy density of W dis appears to be ≈15.4 J cm −3 under the utmost DC electric field of 780 kV cm −1 , which almost matches the P – E measurements (Figure S5, Supporting Information). So far, in terms of the as‐obtained energy storage properties, the as‐designed incommensurate antiferroelectric lead‐based ceramics are much more than those reported, as compared with other kinds of ceramics, as shown in Figure 4d [ 6–8,14,15,18–20,41–74 ] and Figure 4e. [ 8,14,15,20,42,48,50–57,59,61,65,67–69,71 ] Under the condition of equivalent thickness, the optimal performance reported here exceeds all existing antiferroelectric multilayer ceramic capacitors (MLCCs).…”

“…Therefore, focusing on the antiferroelectric material, a lot of research on energy storage has been carried out and the performance has made great progress. [6][7][8][9][14][15][16][17][18][19][20] However, for the energy storage density and the energy storage efficiency, it seems to be rather difficult to reach a very high value at the same time. Basically, so far, previous research of the antiferroelectric materials has mainly concentrated on the electrical properties themselves, i.e., methods I to V in Figure 1.…”

“…Basically, so far, previous research of the antiferroelectric materials has mainly concentrated on the electrical properties themselves, i.e., methods I to V in Figure 1. [6][7][8][9][14][15][16][17][18][19][20] As for the deep-seated modulation mechanism, the existing research seems to be still insufficient. As such, appropriately changing the research perspective, such as the arrangement of occupation ions (or dipoles), may bring new gains.For the ion-displacement-type antiferroelectric PbZrO 3 , two main kinds of microstructures of ion occupation mode can be described to be the commensurate antiferroelectric phase and An incommensurate modulated antiferroelectric phase is a key part of ideal candidate materials for the next generation of dielectric ceramics with excellent energy storage properties.…”

“…Basically, so far, previous research of the antiferroelectric materials has mainly concentrated on the electrical properties themselves, i.e., methods I to V in Figure 1. [6][7][8][9][14][15][16][17][18][19][20] As for the deep-seated modulation mechanism, the existing research seems to be still insufficient. As such, appropriately changing the research perspective, such as the arrangement of occupation ions (or dipoles), may bring new gains.…”

Achieving Enhanced Energy‐Storage Performances in Bi0.5(K0.15Na0.85)0.5TiO3 Ceramics Modified by Sr(Ti0.85Zr0.15)O3

“…Materials, which have large polarization (P max ), low coercive field (E c ), and small remnant polarization (P r ) are expected for energy properties. Usually, energy storage properties can be improved by using ions doping, [1][2][3][4][5] and the large breakdown strength can be realized using an improved preparation method. [6,7] An effective strategy to decrease P r and realize slimmer hysteresis loops is to introduce cation to form relaxor ferroelectric.…”