Significantly enhanced energy storage density and efficiency of BNT-based perovskite ceramics via A-site defect engineering

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

“…(A) Temperature dependence of dielectric constant for PLZST‐1 ceramics, (B) Weibull distribution of BDS for PLZST‐4 ceramics, (C)‐(G) SEM images and grain size distributions for PLZST‐4 ceramics, (H) Comparison of W rec and η of AO1 and AT4 in this work with other reported ceramics, in which AO1 is (Pb 0.94 La 0.04 )(Zr 0.99 Ti 0.01 )O 3 in this work; AT4 is (Pb 0.94 La 0.04 )(Zr 0.49 Sn 0.5 Ti 0.01 )O 3 in this work; PBLZS is (Pb 0.91 Ba 0.045 La 0.03 )(Zr 0.6 Sn 0.4 )O 3 27 ; PLSZS is (Pb 0.94 La 0.02 Sr 0.04 )(Zr 0.9 Sn 0.1 ) 0.995 O 3 31 ; BNT‐ST is 0.75(Bi 0.58 Na 0.42 TiO 3 )‐0.25(SrTiO 3 ) 44 ; PLZST is (Pb 0.94 La 0.04 )[(Zr 0.6 Sn 0.4 ) 0.92 Ti 0.08 ]O 3 45 ; PSLZST is (Pb 0.955 Sr 0.015 La 0.02 )(Zr 0.75 Sn 0.195 Ti 0.055 )O 3 46 ; PLZST@SiO2 is Pb 0.97 La 0.02 (Zr 0.33 Sn 0.55 Ti 0.12 )O 3 @5 mol% SiO 2 47 ; BT‐BLT is 0.9BaTiO 3 ‐0.1Bi(Li 0.5 Ta 0.5 )O 3 48 ; PLZT‐M is (Pb 0.91 La 0.06 )(Zr 0.96 Ti 0.04 )O 3 ‐1 mol% MnCO 3 49 ; AN‐BM is AgNbO 3 ‐0.6 mol% BiMnO 3 50 ; STL/BNBT is (SrTiO 3 +Li 2 CO 3 )/(0.94Bi 0.54 Na 0.46 TiO 3 ‐0.06BaTiO 3 ) 51 ; BT‐BMZ is 0.85BaTiO 3 ‐0.15Bi(Mg 0.5 Zr 0.5 )O 3 52 ; PBLYST‐PLZST is (Pb 0.858 Ba 0.1 La 0.02 Y 0.008 )(Zr 0.65 Sn 0.3 Ti 0.05 )O 3 ‐(Pb 0.97 La 0.02 )(Zr 0.9 Sn 0.05 Ti 0.05 )O 3 53 ; ANT is Ag(Nb 0.85 Ta 0.15 )O 3 54 [Color figure can be viewed at wileyonlinelibrary.com]…”

NaNbO3‐(Bi0.5Li0.5)TiO3 Lead‐Free Relaxor Ferroelectric Capacitors with Superior Energy‐Storage Performances via Multiple Synergistic Design

“…[7,[11][12][13][14][15][16] Owing to the extremely low energy loss, lead-free relaxor FE ceramics based on BaTiO 3 (BT), (Na 0.5 Bi 0.5 ) TiO 3 (BNT), BiFeO 3 (BF), and (K 0.5 Na 0.5 )NbO 3 (KNN), etc., have been actively studied in the last few years. [3,[8][9][10][17][18][19][20][21][22][23][24][25][26][27][28][29] Nevertheless, the obtained W rec values are generally lower than 5 J cm -3 together with η values >80%. The low E B value has been recognized as a very important reason for relaxor FEs.…”

“…[6,11,32] However, even enough high E B values over 40 kV mm -1 have been realized in some studies, W rec values are still lower than 7 J cm -3 , basically because of relatively low P max values and early polarization saturation. [3,8,25,27,29] Moreover, a delicate balance between different property parameters in theory obviously limits the development of energy-storage dielectrics with excellent comprehensive performances. As can be found in Figure 1b, the W rec value of most lead-free relaxor FE ceramics has an approximately linear relationship with the testable electric field, demonstrating that discovering methods to improve the achievable P max and optimize the shape of the P-E curves is important.…”

Growth, Properties and Applications of Bi0.5Na0.5TiO3 Ferroelectric Nanomaterials

“…In addition to structure and morphology, composition also plays an essential role in determination of the BNT ferroelectric nanomaterials' intrinsic properties. For instance, as compared Nanomaterials 2021, 11, 1724 2 of 18 with pure BNT, Sn modified BNT ferroelectric nanomaterials possess more excellent dielectric properties [17], and Sr 2+ ions substituted BNT ferroelectric nanomaterials show higher recoverable energy density W rec as well as larger efficiency η [18]. Moreover, construction of solid solutions and composites materials provides another effective approach for the improvement of BNT ferroelectric nanomaterials' properties [19,20].…”