High energy density and efficiency in (Pb,La)(Zr,Sn,Ti)O3 antiferroelectric ceramics with high La3+ content and optimized Sn4+ content

Pb/Bi-free Tungsten Bronze-Based Relaxor Ferroelectric Ceramics with Remarkable Energy Storage Performance

“…Consequently, an outstanding energy storage density value of 3.84 J/cm 3 with an excellent efficiency value of 93.2% is achieved simultaneously under an applied electric field of 410 kV/cm. A comparison of W rec and η values of the SKNT-0.8 ceramic and those reported in lead-based, ,,− Bi-based perovskite-based, ,,,− and Pb/Bi-free TB-based ,,, is shown in the Figure f. Apparently, the remarkable energy storage density and efficiency realized simultaneously in this study can be on a par with that of most Bi-based perovskite-based ceramics reported recently and are significantly superior than that of other TB-based ceramics, showing great advantages in potential high-power energy capacitor applications.…”

“…Bi-based 0.76NN-0.24NBT ceramics with ultrahigh energy density (>12 J/cm 3 ) is worth mentioning . However, the large-scale production and application of Pb-based perovskite REFs are limited, which is ascribed to the fact that lead-based compounds are not friendly to the nature and human health. , Meanwhile, the reaction with the base metal electrode is usually unavoidable in the Bi-based RFEs, which will be adverse to the device integration and cost reduction. , Therefore, it is of great significance to develop Pb/Bi-free RFEs for capacitor applications. Perovskite materials especially NaNbO 3 (NN)-based , and AgNbO 3 (AN)-based , ceramics have dominated the research on Pb/Bi-free RFEs over the past few years.…”

“…13 However, the large-scale production and application of Pbbased perovskite REFs are limited, which is ascribed to the fact that lead-based compounds are not friendly to the nature and human health. 14,15 Meanwhile, the reaction with the base metal electrode is usually unavoidable in the Bi-based RFEs, which will be adverse to the device integration and cost reduction. 16,17 Therefore, it is of great significance to develop Pb/Bi-free RFEs for capacitor applications.…”

Ag Decoration and SnO2 Coupling Modified Anatase/Rutile Mixed Crystal TiO2 Composite Photocatalyst for Enhancement of Photocatalytic Degradation towards Tetracycline Hydrochloride

“…The interplanar spacing 0.356 nm in Figure 3 d corresponds to the anatase (101) crystal plane, which is larger than that of pure TiO 2 (0.348 nm). As the radius of Sn 4+ (0.0690 nm) is larger than that of Ti 4+ (0.0605 nm), the replacement of Ti 4+ by Sn 4+ will cause a lattice expansion, resulting in the increase of interplanar spacing [ 33 ]. The marked interplanar spacing 0.330 nm corresponds to the rutile (110) crystal plane [ 34 ].…”

High energy storage density and efficiency with excellent temperature and frequency stabilities under low operating field achieved in Ag0.91Sm0.03NbO3-modified Na0.5Bi0.5TiO3-BaTiO3 ceramics

“…It is well-known that antiferroelectric (AFE) ceramics, owing to their double polarization hysteresis loops, possess high energy storage density [4,6,9,[13][14][15][16][17][18][19][20][21][22][23][24][25][26]. Unfortunately, a large number of energy storage AFE ceramics contain Pb element [17][18][19][20][21][22][23][24][25][26], which is harmful for people and environment. Besides, these ceramics usually exhibit large energy loss due to antiferroelectric-ferroelectric transition behavior [27,28].…”