Significantly Improvement of Comprehensive Energy Storage Performances with Lead-free Relaxor Ferroelectric Ceramics for High-temperature Capacitors Applications

Ye, Haoran; Yang, Fan; Pan, Zhongbin; Hu, Di; Lv, Xujiao; Chen, Hanxi; Wang, Feifei; Wang, Jiasheng; Li, Peng; Chen, Jianwen; Liu, Jinjun; Zhai, Jiwei

doi:10.1016/j.actamat.2020.116484

Cited by 182 publications

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“…Considering that the energy loss density (W loss ) is an inevitable part of ferroelectric ceramics, the recoverable energy storage density (W rec ) and energy efficiency (η) are key parameters for evaluating the energy storage performance of nonlinear dielectric ceramic capacitors. [9,17,23] It has been reported that BiFeO 3 (BF) possesses very high spontaneous polarization (≈100 µC cm −2 ), which is superior to most perovskite ferroelectrics, including BaTiO 3 , Bi 0.…”

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confidence: 99%

Composition and Structure Optimized BiFeO₃‐SrTiO₃ Lead‐Free Ceramics with Ultrahigh Energy Storage Performance

Yan

Bai

et al. 2022

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capacitors), dielectric capacitors are promising candidates for advanced pulsed power applications owing to their high power density and fast charge/discharge speed. [6][7][8] Ceramic dielectrics show excellent temperature stability and mechanical robustness, are promising materials for use in extreme conditions. [9] Anti-ferroelectric ceramics (such as PbTiO 3 -and Pb(Zr,Ti)O 3 -based dielectrics) display double polarization-electric field (P-E) loops, which have tremendous potential for realizing high energy density. [10][11][12] However, most of these materials are Pbbased, whose toxic nature causes a series of environmental problems. Thus, leadfree ceramics have attracted considerable attention as a replacement to Pb-based materials. [7,[13][14][15][16][17][18] Until now, the low energy storage performance (low energy storage density of <4 J cm −3 and/or inferior efficiency of <80%) of lead-free ceramic capacitors hardly meet the increasing integration and miniaturization requirements. [19][20][21][22] Thus, it is imperative to improve the energy storage performance of lead-free ceramic capacitors.As shown in the schematic of Figure 1a, the energy storage density and efficiency of the dielectric capacitors are governed by the maximum polarization (P max ), remanent polarization (P r ), and dielectric breakdown strength (E BDS ). The combination of a large P max , small P r , and high E BDS is essential for realizing ultrahigh energy storage density and efficiency. Considering that the energy loss density (W loss ) is an inevitable part of ferroelectric ceramics, the recoverable energy storage density (W rec ) and energy efficiency (η) are key parameters for evaluating the energy storage performance of nonlinear dielectric ceramic capacitors. [9,17,23] It has been reported that BiFeO 3 (BF) possesses very high spontaneous polarization (≈100 µC cm −2 ), which is superior to most perovskite ferroelectrics, including BaTiO 3 , Bi 0.

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confidence: 99%

Composition and Structure Optimized BiFeO₃‐SrTiO₃ Lead‐Free Ceramics with Ultrahigh Energy Storage Performance

Yan

Bai

et al. 2022

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“…Please note that the maximum electric field E max used to calculate W rec and η is only 45 kV cm −1 , which is much less than that of ≈300 kV cm −1 used to measure the W rec and η % for other lead‐free ceramics with even high energy storage properties. [ 29,30 ] But, our results demonstrate BMN can be used as a potential relaxor modifier to improve energy storage properties of lead‐free materials.…”

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confidence: 92%

“…It is reported that the relaxor ferroelectric NBT–BZT has a high W rec of 3.1 J cm −3 and high η of 91%, [ 29 ] and the W rec of BNBLT–0.25SBT reaches 4.55 J cm −3 . [ 30 ] Its P–E hysteresis loops show typical relaxor characteristics with a low P r . [ 7,31 ] BMN can form solid solutions with PbTiO 3 , BT, Bi 1/2 K 1/2 TiO 3 , BiFeO 3 –BaTiO 3 and Na 0.5 Bi 0.5 TiO 3 to produce wide dispersion, reduced P r , and improved W rec and energy storage efficiency ( η %).…”

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confidence: 99%

Improved Dielectric and Energy Storage Properties of Ba_0.8Ca_0.2TiO₃ Ceramics by Doping Ba(Mg_1/3Nb_2/3)O₃

Zhang

Fang

et al. 2021

Physica Status Solidi (a)

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Lead-free Ba 0.8 Ca 0.2 TiO 3 -xmol%Ba(Mg 1/3 Nb 2/3 )O 3 (abbreviated as BCT20-xBMN, x ¼ 0-8) ceramics are fabricated by a conventional solid-state reaction method. All BCT20-xBMN ceramics have pure perovskite phases which gradually change from tetragonal phase to cubic phase. The average grain size decreases significantly from %23 to %1.2 μm with the increase in BMN content. The T m corresponding to the dielectric maximum of BCT20-xBMN decreases with the increase in x, and the room temperature dielectric constant increases significantly. The recoverable energy storage density W rec and efficiency η% are enhanced to 0.17 J cm À3 and 81.3% for BCT20-6BMN due to the reduced remanent polarization by BMN doping. The W rec increases with increasing temperature and shows peak values near the T m . The η% of BCT20-6BMN and BCT20-7BMN has good temperature stability due to enhanced relaxor behavior.

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“…Figure 1B displays the ( αhv ) 2 – hv plot of SZSHTN, where α , h and v is absorbance coefficient, the Planck constant and frequency, respectively. As shown in the plot, the bandgap ( E g ) of SZSHTN is 3.76 eV, much higher than that of the NBT matrix ( E g ∼ 3.0 eV), which benefits for boosting the breakdown strength of NBT ceramics 40,41 . Figure 1C exhibits SEM micrographs of SZSHTN ceramic.…”

Section: Resultsmentioning

confidence: 96%

“…Figure 4D shows the P – E loops of x = 0.2 composition in the temperature range of 20–150°C under an electric field of 150 kV/cm. The values of W rec and η vary only ±6.08%(−6.08% ∼ +0.8%) and ±7.4%(−7.4% ∼ 0%), as which indicatesthe superior temperature stability of energy storage performance 17,22,23,41,55–65 …”

Section: Resultsmentioning

confidence: 97%

Dielectric temperature stability and energy storage performance of NBT‐based ceramics by introducing high‐entropy oxide

et al. 2022

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In this study, a high‐entropy perovskite oxide Sr(Zr0.2Sn0.2Hf0.2Ti0.2Nb0.2)O3 (SZSHTN) was first introduced to Na0.5Bi0.5TiO3 (NBT) lead‐free ferroelectric ceramics to boost both the high‐temperature dielectric stability and energy storage performance. Excellent comprehensive performance was simultaneously obtained in the 0.8NBT–0.2SZSHTN ceramic with high ε′ value (> 2000), wide ε′‐temperature stable range (TCC < 5%, 52.4–362°C), low tanδ value in a wide range (<0.01, 90–341°C) and high energy storage performance (Wrec = 3.52 J/cm3, Wrec and η varies ±6.08% and ±7.4% from 20 to 150°C), which endows it the promising potential to be used in high‐temperature environments.

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Significantly Improvement of Comprehensive Energy Storage Performances with Lead-free Relaxor Ferroelectric Ceramics for High-temperature Capacitors Applications

Cited by 182 publications

References 64 publications

Composition and Structure Optimized BiFeO₃‐SrTiO₃ Lead‐Free Ceramics with Ultrahigh Energy Storage Performance

Composition and Structure Optimized BiFeO₃‐SrTiO₃ Lead‐Free Ceramics with Ultrahigh Energy Storage Performance

Improved Dielectric and Energy Storage Properties of Ba_0.8Ca_0.2TiO₃ Ceramics by Doping Ba(Mg_1/3Nb_2/3)O₃

Dielectric temperature stability and energy storage performance of NBT‐based ceramics by introducing high‐entropy oxide

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Significantly Improvement of Comprehensive Energy Storage Performances with Lead-free Relaxor Ferroelectric Ceramics for High-temperature Capacitors Applications

Cited by 182 publications

References 64 publications

Composition and Structure Optimized BiFeO3‐SrTiO3 Lead‐Free Ceramics with Ultrahigh Energy Storage Performance

Composition and Structure Optimized BiFeO3‐SrTiO3 Lead‐Free Ceramics with Ultrahigh Energy Storage Performance

Improved Dielectric and Energy Storage Properties of Ba0.8Ca0.2TiO3 Ceramics by Doping Ba(Mg1/3Nb2/3)O3

Dielectric temperature stability and energy storage performance of NBT‐based ceramics by introducing high‐entropy oxide

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Composition and Structure Optimized BiFeO₃‐SrTiO₃ Lead‐Free Ceramics with Ultrahigh Energy Storage Performance

Composition and Structure Optimized BiFeO₃‐SrTiO₃ Lead‐Free Ceramics with Ultrahigh Energy Storage Performance

Improved Dielectric and Energy Storage Properties of Ba_0.8Ca_0.2TiO₃ Ceramics by Doping Ba(Mg_1/3Nb_2/3)O₃