Enhanced energy storage properties in Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics with glass additives

Abstract

The Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) ceramics added with Bi2O3–B2O3–SiO2 glass were synthesized by the sol-gel method, and the effect on their microstructural, dielectric, energy storage properties has been discussed. The SEM results demonstrate that the average grain size decreases obviously with reducing glass additive, which is enriched at the grain boundary. Owing to the addition of glass additive, sintering temperature decreases significantly. Moreover, the glass additives broaden the dielectric peak and the Curie temperature shifts toward lower temperature. The ceramic with glass additive shows better impedance properties than that of pure BCZT ceramics. In addition, the coercive field and remnant polarization of hysteresis loop were greatly decreased by introducing glass additives in BCZT ceramics. Notably, the sample with 5% glass additive shows the highest energy storage density (2.12 J/cm3) and the largest storage efficiency (90.5%) at 330 kV/cm electric field. These findings provide a potential pathway to enhance energy storage properties of BCZT ceramics in order to promote its energy storage application in practice.

Utilizing Domain Engineering to Achieve High-Polarization Relaxor Ferroelectrics for Low-Consumption Ceramic Capacitors

“…The mapping shown in Figure c1 reveals orderly vertical stripes, indicating excellent fatigue behavior with almost no loss in either W rec or η, as seen in Figure c2, which shows the variation between energy storage performance and the number of cycles. Figure d compares the W rec and WTUEF of 0.90BCZT-0.10NN and 0.70BCZT-0.30NN with some typical BCZT-based dielectrics. − As expected, 0.90BCZT-0.10NN shows a significant advantage in W rec / E b though its W rec is not the highest. Conversely, 0.70BCZT-0.30NN performs best among all the compared samples in achieving high W rec .…”

Design of lead-free BCZT-based ceramics with enhanced piezoelectric energy harvesting performances

“…16 This high value, comparable to those of lead-based materials such as soft PZT, 16 has drawn substantial attention to lead-free BaTiO 3 (BT)-based ferroelectric ceramics. 9,17–22 Lately, we reported BCZT ceramics with an enhanced of 234 pm V −1 and relatively stable piezoelectric properties due to a higher T c of ∼90 °C. 23…”

Colossal dielectric permittivity and high energy storage efficiency in barium strontium titanate ceramics co-doped with bismuth and lithium

“…Reports regarding the CP in single doped STO also proposed that the co-doping may give more freedom to control the dielectric properties due to the effects of charge, lattice distortion, and the defect dipole [31]. Over the past few decades, many studies have been conducted on the solid dielectric materials regarding high energy storage density, high energy efficiency and good stability for energy storage applications [35,36]. Based on the literature, there are several parameters such as spontaneous polarization, remnant polarization, breakdown voltage etc, that can play a major role in controlling the performance of the dielectric materials [35][36][37][38][39][40].…”

“…Over the past few decades, many studies have been conducted on the solid dielectric materials regarding high energy storage density, high energy efficiency and good stability for energy storage applications [35,36]. Based on the literature, there are several parameters such as spontaneous polarization, remnant polarization, breakdown voltage etc, that can play a major role in controlling the performance of the dielectric materials [35][36][37][38][39][40]. Inspired by the idea of pinned defect-dipoles in (donor + acceptor) codoped TiO 2 and SrTiO 3 ceramics, similar strategies have been used to investigate the CP of Bi and Li co-doped BST ceramics.…”