An alternative way to design excellent energy-storage properties in Na0.5Bi0.5TiO3-based lead-free system by constructing relaxor dielectric composites

Wang, Jun; Li, Tianyu; Jiang, Xuewen; Zhou, Cong; Yue, Xu; Shi, Ruijian; Liu, Liqiang; Chu, Baojin; Zhao, Zhe; Zuo, Ruzhong

doi:10.1016/j.jeurceramsoc.2022.07.025

Cited by 27 publications

(8 citation statements)

References 60 publications

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“…The lower leakage current density indicates the lack of charged carriers, which is conducive to enhance insulation characteristics and thus a higher E b . 44 The permittivity (ɛ r ) and dielectric loss (tanδ) of (1-x)NBLBT-xSANT ceramics from 0 to 400 • C are shown in Figure 5(A-C and the thermal evolution of P4bm PNRs, 25,43,45 with the increase of SANT, T s and T m gradually transfer to lower temperature. In addition, (1-x)NBLBT-xSANT ceramics exhibit frequency dispersion, which is typical relaxor ferroelectrics.…”

Section: Resultsmentioning

confidence: 99%

Prominent energy storage density and efficiency of Na_0.5Bi_0.5TiO₃‐based ceramics via multiscale amelioration strategy

Chen,

Pu,

Ning

et al. 2023

J Am Ceram Soc.

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Eco‐friendly ceramic capacitors gradually become an important section of pulsed power devices. However, the synchronous realization of ultra‐high energy storage density (Wrec > 6 J/cm3) and efficiency (η > 90%) is difficult. Thus, a novel multiscale amelioration strategy in Na0.5Bi0.5TiO3‐based ceramics is proposed to achieve ultra‐high energy storage density and efficiency. The multiscale amelioration strategy for (Na0.5Bi0.47La0.03)0.94Ba0.06TiO3 (NBLBT) ceramic focuses on grain size, bandgap width, and dielectric relaxor behavior, which can be regulated by introducing Sr(Al0.5Nb0.25Ta0.25)O3 (SANT). On the one hand, the refined grain size and increased bandgap width are conducive to improving the breakdown strength. On the other hand, the optimized dielectric relaxation behavior is beneficial to suppress the remanent polarization. Accordingly, an ultrahigh Wrec = 6.89 J/cm3 and η = 90.1% are simultaneously achieved in 0.84NBLBT‐ 0.16SANT ceramic. In addition, the sample synchronously possesses excellent thermal and frequency stability (a variation within 5% in Wrec and η), transient discharge rate of t0.9 ∼ 78.8 ns and a high‐power density of PD ∼ 114.5 MW/cm3. This study provides an effective strategy to further develop pulsed power devices.

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Section: Resultsmentioning

confidence: 99%

Prominent energy storage density and efficiency of Na_0.5Bi_0.5TiO₃‐based ceramics via multiscale amelioration strategy

Chen,

Pu,

Ning

et al. 2023

J Am Ceram Soc.

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“…In the past several decades, a heterostructure doping strategy has been proposed to tailor the polarization behavior of the perovskite structure ferroelectric by introducing the second phase with other structures. ,,− For instance, Zheng et al added 2 mol % BaBi 2 Nb 2 O 9 with the bismuth layer structure into the Bi 0.5 Na 0.5 TiO 3 -SrTiO 3 system, resulting in a high P max of around 49 μC/cm 2 and a modest P r of around 5 μC/cm 2 at 250 kV/cm . Hou introduced 0.5% mol Cs 2 Nb 4 O 11 with the tungsten bronze structure into the BKT-based ceramic, achieving a large P max (∼47 μC/cm 2 ) and a small P r (∼11 μC/cm 2 ) at 80 kV/cm .…”

Section: Introductionmentioning

confidence: 99%

“…21 Wang et al doped a small amount of Ba 5 LaTi 3 Ta 7 O 30 with the tungsten bronze structure into the Bi 0.5 Na 0.5 TiO 3 system and obtained a large ΔP of 17 μC/cm 2 with a tiny P r of 1 μC/cm 2 at 420 kV/cm. 22 Deng introduced 9 mol % pyrochlore phase Sm 2 Ti 2 O 7 into the BNT ceramic, obtaining a large P max of around 44 μC/cm 2 along with a tiny P r of around 3 μC/cm 2 at 368 kV/cm. 23 All of these results demonstrate that heterostructure doping is an effective strategy in depressing the P r of perovskite structure ferroelectrics.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Hou introduced 0.5% mol Cs 2 Nb 4 O 11 with the tungsten bronze structure into the BKT-based ceramic, achieving a large P max (∼47 μC/cm 2 ) and a small P r (∼11 μC/cm 2 ) at 80 kV/cm . Wang et al doped a small amount of Ba 5 LaTi 3 Ta 7 O 30 with the tungsten bronze structure into the Bi 0.5 Na 0.5 TiO 3 system and obtained a large Δ P of 17 μC/cm 2 with a tiny P r of 1 μC/cm 2 at 420 kV/cm . Deng introduced 9 mol % pyrochlore phase Sm 2 Ti 2 O 7 into the BNT ceramic, obtaining a large P max of around 44 μC/cm 2 along with a tiny P r of around 3 μC/cm 2 at 368 kV/cm .…”

Section: Introductionmentioning

confidence: 99%

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Achieving Remarkable Energy Storage Performances under Low Electric Field in Bi_0.5N_0.5TiO₃-SrTiO₃-Based Relaxor Ferroelectric Ceramics via a Heterostructure Doping Strategy

Lin,

Wan,

Zheng

et al. 2023

ACS Appl. Electron. Mater.

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The rapid growth of the electronics industry and increasing concern about environmental issues present great demands for lead-free dielectric ceramic capacitors with remarkable energy storage performances (ESPs). Lead-free perovskite ferroelectric and antiferroelectric systems are deemed as the most promising candidates, and homostructure linear dielectric doping is a widely used strategy to boost ESPs. However, the heavy doping of a linear dielectric usually leads to a great reduction of the polarization, for which an extremely high electric field is needed to achieve a large energy storage density (W rec ). In this study, a Bi 0.5 N 0.5 TiO 3 -SrTiO 3 (BNT-ST)-based relaxor ferroelectric system was designed via a heterostructure doping strategy in which a tetragonal tungsten bronze ferroelectric phase Sr 2 NaNb 5 O 15 (SNN) was introduced into the perovskite matrix. It was found that a small SNN heterostructure doping amount could effectively enhance the relaxor behavior of the BNT-ST ceramic and depress the remnant polarization, while keeping a large maximum polarization. Moreover, the introduction of the tungsten bronze ferroelectric phase obviously decreased the grain size (G) of the BNT-ST ceramic, giving rise to an improved electric breakdown strength (E b ). Finally, a remarkable W rec of 5.22 J/cm 3 and excellent efficiency (η) of 93.87% were attained under a low electric field of 340 kV/cm, which make the Bi 0.5 N 0.5 TiO 3 -SrTiO 3 -xSr 2 NaNb 5 O 15 (BNT-ST-xSNN) ceramic system a promising choice for the dielectric energy storage field. These results demonstrate that the heterostructure doping strategy might be a feasible method to develop lead-free perovskite dielectric ceramics with remarkable ESPs under low electric fields.

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“…show distinct loss which is positively correlated to E. [4] Part of the stored energy is dissipated as the energy loss (U loss ), which reduces the energy efficiency 𝜂 [defined as U e /(U e + U loss )]. Commonly, the main origin of energy loss is the conduction loss (for ferroelectrics, the hysteresis may dominate loss [5] ). Suppressing charge transport and increasing insulation resistance, seems to be a promising strategy, which also improves E b .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Energy Storage Properties in Paraelectrics via Entropy Engineering

Lan

Meng

Yang

et al. 2023

Advanced Physics Research

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Electrostatic energy storage capacitors based on dielectrics have attracted much attention due to their wide applications in advanced electrical technology and electronic devices. Generally, high energy density is achieved at a high electric field, while conduction loss becomes nonnegligible, which harms practical applications. Here distinctly suppressed leakage current in BaZr0.5Ti0.5O3‐based films by entropy engineering is realized. With increased entropy, the leakage current density decreases by two orders of magnitude at the electric field of 3 MV cm−1, leading to a markedly improved energy efficiency of 87% at an ultrahigh breakdown strength of 8 MV cm−1 in high‐entropy films. Thereby, a high energy density of 51.9 J cm−3 is achieved. This work demonstrates the effectiveness of entropy engineering in improving the breakdown strength of dielectric films and shows great potential in enhancing the energy storage performance of capacitors.

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An alternative way to design excellent energy-storage properties in Na0.5Bi0.5TiO3-based lead-free system by constructing relaxor dielectric composites

Cited by 27 publications

References 60 publications

Prominent energy storage density and efficiency of Na_0.5Bi_0.5TiO₃‐based ceramics via multiscale amelioration strategy

Prominent energy storage density and efficiency of Na_0.5Bi_0.5TiO₃‐based ceramics via multiscale amelioration strategy

Achieving Remarkable Energy Storage Performances under Low Electric Field in Bi_0.5N_0.5TiO₃-SrTiO₃-Based Relaxor Ferroelectric Ceramics via a Heterostructure Doping Strategy

Enhanced Energy Storage Properties in Paraelectrics via Entropy Engineering

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An alternative way to design excellent energy-storage properties in Na0.5Bi0.5TiO3-based lead-free system by constructing relaxor dielectric composites

Cited by 27 publications

References 60 publications

Prominent energy storage density and efficiency of Na0.5Bi0.5TiO3‐based ceramics via multiscale amelioration strategy

Prominent energy storage density and efficiency of Na0.5Bi0.5TiO3‐based ceramics via multiscale amelioration strategy

Achieving Remarkable Energy Storage Performances under Low Electric Field in Bi0.5N0.5TiO3-SrTiO3-Based Relaxor Ferroelectric Ceramics via a Heterostructure Doping Strategy

Enhanced Energy Storage Properties in Paraelectrics via Entropy Engineering

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Product

Resources

About

Prominent energy storage density and efficiency of Na_0.5Bi_0.5TiO₃‐based ceramics via multiscale amelioration strategy

Prominent energy storage density and efficiency of Na_0.5Bi_0.5TiO₃‐based ceramics via multiscale amelioration strategy

Achieving Remarkable Energy Storage Performances under Low Electric Field in Bi_0.5N_0.5TiO₃-SrTiO₃-Based Relaxor Ferroelectric Ceramics via a Heterostructure Doping Strategy