The role of dielectric permittivity in the energy storage performances of ultrahigh-permittivity (SrxBa1−x)(Ti0.85Sn0.15)O3 ceramics

Qu, Luo; Li, Xixi; Yao, Zhonghua; Zhang, Lin; Xie, Juan; Hao, Hua; Cao, Minghe; Manan, Abdul; Liu, Hanxing

doi:10.1016/j.ceramint.2017.12.146

Cited by 22 publications

(8 citation statements)

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“…However, few experimental reports concerning the grain‐size dependence of the dielectric breakdown strength and even fewer mechanistic analyses have been carried out on the size‐dependent dielectric breakdown of ferroelectric ceramics. It has been reported that the dielectric breakdown strength dominates the energy performance in ferroelectric materials compared to the dielectric permittivity, especially under an ultrahigh electric field from the experimental aspect . Furthermore, the energy storage efficiency is considered one of the most important indicators of ferroelectric energy storage ceramics, which is why relaxor ferroelectric ceramics are attracting increasingly more attention in applications of energy storage devices .…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported that the dielectric breakdown strength dominates the energy performance in ferroelectric materials compared to the dielectric permittivity, especially under an ultrahigh electric field from the experimental aspect. 19 Furthermore, the energy storage efficiency is considered one of the most important indicators of ferroelectric energy storage ceramics, which is why relaxor ferroelectric ceramics are attracting increasingly more attention in applications of energy storage devices. [20][21][22][23][24][25] Such energy storage densities can be easily calculated from electric hysteresis loops.…”

Section: Introductionmentioning

confidence: 99%

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Grain‐size–dependent dielectric properties in nanograin ferroelectrics

et al. 2018

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A series of ferroelectric ceramic models with grain and grain‐boundary structures of different sizes are established via Voronoi tessellations. A phase‐field model is introduced to study the dielectric breakdown strength of these ferroelectric ceramics. Afterward, the relation between the electric displacement and electric field and the hysteresis loop are calculated using a finite element method based on a classical and modified hyperbolic tangent model. The results indicate that as the grain size decreases, the dielectric strength is enhanced, but the dielectric permittivity is reduced. The discharge energy density and energy storage efficiency of these ferroelectric ceramics extracted from the as‐calculated hysteresis both increase along with a decrease in their grain size at their breakdown points. However, under the same applied electric field, the ferroelectric ceramic with a smaller grain size possesses a lower discharge energy density but a higher energy storage efficiency. The results suggest that ferroelectric ceramics with smaller grain sizes possess advantages for applications in energy storage devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Grain‐size–dependent dielectric properties in nanograin ferroelectrics

et al. 2018

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“…Energy efficiency remains above 92% even at the maximum applied electric field. The energy storage comparison of 0.6BST–0.4BMH ceramic with other BST-based lead-free ceramics is given in Figure d. ,,− The W rec of 0.6BST–0.4BMH is superior to other reported BST-based ceramics whose W rec are less than 2 J/cm 3 . The improved BDS of the studied 0.6BST–0.4BMH ceramic is due to the small grain size, low dielectric loss, and high resistivity, which greatly benefit the enhanced W rec .…”

Section: Results and Discussionmentioning

confidence: 96%

(Ba,Sr)TiO₃–Bi(Mg,Hf)O₃ Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

Kong

Yang

Cheng

et al. 2020

ACS Appl. Energy Mater.

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Dielectric capacitors with high energy storage performance have been actively studied for emerging applications. In this work, a series of environmental friendly lead-free relaxor ferroelectric ceramics, (1 − x)(Ba 0.75 Sr 0.25 )TiO 3 −xBi(Mg 0.5 Hf 0.5 )O 3 with 0 ≤ x ≤ 0.5 [abbreviated as (1 − x)BST−xBMH], were synthesized by a high-temperature solid-state reaction method. The perovskite structure without any secondary phase can be obtained in samples with x ≤ 0.4. As the BMH content increases, the polarization−electric field (P−E) loop becomes slim and slanted. A large recoverable energy storage density of 4.3 J/cm 3 and high energy efficiency of 92% were achieved simultaneously in 0.6BST−0.4BMH at 390 kV/cm. The fine grain morphology with minimal porosity and the high conductivity activation energy were responsible for the enhanced breakdown strength. Of particular importance is that the 0.6BST−0.4BMH ceramic shows excellent temperature stability and cycling reliability with energy density variations below 3 and 4%, respectively. In addition, the 0.6BST−0.4BMH ceramic possesses fast discharge time (∼0.59 μs) with a high power density of 3.5 MW/cm 3 . All these merits reveal that the lead-free 0.6BST−0.4BMH relaxor ceramic is a promising candidate for high-temperature and high-power energy storage capacitor applications.

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“…W rec and E b values of SBT–8BMH ceramic are considerably higher than those of other reported lead‐free energy‐storage ceramics, as shown in Table 1 . [ 17,20,24–32 ]…”

Section: Resultsmentioning

confidence: 99%

Enhanced Energy‐Storage Properties and Good Temperature Stability in 0.92(Sr_0.7Bi_0.2)TiO₃–0.08Bi(Mg_0.5Hf_0.5)O₃ Relaxor Ferroelectric Ceramic

Kong

Yang

Cheng

et al. 2021

Adv Energy and Sustain Res

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Herein, the (1 − x)(Sr0.7Bi0.2)TiO3–xBi(Mg0.5Hf0.5)O3 (SBT–100xBMH, x = 0.04–0.10) relaxor ferroelectric ceramics are fabricated via the high‐temperature solid‐state reaction method. Dielectric and ferroelectric measurements reveal a typical relaxor characteristic with diffused and frequency‐dependent dielectric peaks. The characteristic Weibull breakdown strength (BDS) of 470 kV cm−1 with satisfied reliability is obtained by DC breakdown measurement. A maximum recoverable energy density of 3.5 J cm−3 with the corresponding energy efficiency of 92% is simultaneously achieved at 380 kV cm−1. The recoverable energy density exhibits minor degradations from ambient temperature to 200 °C with variation below 20%, whereas the energy efficiency is maintained above 90%. In addition, the SBT–8BMH ceramic possesses a fast charge–discharge speed with high discharge power density of 2.9 MW cm−3. All the results make this lead‐free relaxor ferroelectric ceramic a promising potential candidate for high‐temperature energy‐storage capacitor applications.

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The role of dielectric permittivity in the energy storage performances of ultrahigh-permittivity (SrxBa1−x)(Ti0.85Sn0.15)O3 ceramics

Cited by 22 publications

References 61 publications

Grain‐size–dependent dielectric properties in nanograin ferroelectrics

Grain‐size–dependent dielectric properties in nanograin ferroelectrics

(Ba,Sr)TiO₃–Bi(Mg,Hf)O₃ Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

Enhanced Energy‐Storage Properties and Good Temperature Stability in 0.92(Sr_0.7Bi_0.2)TiO₃–0.08Bi(Mg_0.5Hf_0.5)O₃ Relaxor Ferroelectric Ceramic

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The role of dielectric permittivity in the energy storage performances of ultrahigh-permittivity (SrxBa1−x)(Ti0.85Sn0.15)O3 ceramics

Cited by 22 publications

References 61 publications

Grain‐size–dependent dielectric properties in nanograin ferroelectrics

Grain‐size–dependent dielectric properties in nanograin ferroelectrics

(Ba,Sr)TiO3–Bi(Mg,Hf)O3 Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

Enhanced Energy‐Storage Properties and Good Temperature Stability in 0.92(Sr0.7Bi0.2)TiO3–0.08Bi(Mg0.5Hf0.5)O3 Relaxor Ferroelectric Ceramic

Contact Info

Product

Resources

About

(Ba,Sr)TiO₃–Bi(Mg,Hf)O₃ Lead-Free Ceramic Capacitors with High Energy Density and Energy Efficiency

Enhanced Energy‐Storage Properties and Good Temperature Stability in 0.92(Sr_0.7Bi_0.2)TiO₃–0.08Bi(Mg_0.5Hf_0.5)O₃ Relaxor Ferroelectric Ceramic