Extraordinary energy storage performance and thermal stability in sodium niobate-based ceramics modified by the ion disorder and stabilized antiferroelectric orthorhombic R phase

Kang, Ruirui; Wang, Zepeng; Yang, Weijie; Zhu, Xiaoli; Shi, Peng; Gao, Yangfei; Mao, Pu; Zhao, Jiantuo; Zhang, Lixue; Lou, Xiaojie

doi:10.1039/d1ta06848b

Cited by 34 publications

(16 citation statements)

References 68 publications

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“…Figure summarizes the W rec , η, and E b values of newly reported NaNbO 3 -, Bi 0.5 Na 0.5 TiO 3 -, BaTiO 3 -, BiFeO 3 -, and AgNbO 3 -based lead-free dielectric ceramics. ,,,,− Of note, the synergistic improvement of W rec (>10 J/cm 3 ) and η (>80%) has been a significant long-term challenge for lead-free ceramic capacitors (Figure a). Specifically, relaxor ferroelectric ceramics can easily achieve high η (>80%) because of their superior dielectric relaxor behavior, while W rec is seriously restricted by their relatively low E b (<60 kV/mm, Figure b).…”

Section: Introductionmentioning

confidence: 97%

Achieving Ultrahigh Energy Storage Density in Lead-Free Sodium Niobate-Based Ceramics by Modulating the Antiferroelectric Phase

Zhang

Guo

et al. 2022

Chem. Mater.

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Lead-free antiferroelectric ceramics have drawn widespread interest recently on account of their environmentally friendly components and potential applications in high-power systems. However, their relatively low recoverable energy storage density (W rec < 10 J/cm 3 ), limited by the electric breakdown strength (E b < 60 kV/mm), and low efficiency (η < 80%), generated by large hysteresis during the antiferroelectric−ferroelectric phase transition, have seriously restricted their application in portable and compact electronic devices. In this study, the relaxor antiferroelectric (1− x)NaNbO 3−x (0.55BiFeO 3 -0.45SrTiO 3 ) ceramics were elaborately designed and systematically explored. With the help of composition regulation, the ceramics not only exhibited a stable antiferroelectric phase but also underwent a structural transformation from an antiferroelectric P (Pbma) phase to R (Pnma) phase, as confirmed by the temperature-dependent dielectric constants, Raman spectra, X-ray diffraction (XRD) refinement, pinched polarization-electric field (P−E) curves, and four-peak current-electric field (I−E) curves. In addition, the relaxor characteristic was demonstrated by the diffuse dielectric peaks, slim P−E curves, flattened Raman peaks, and I−E curves. Consequently, novel relaxor antiferroelectric ceramics were successfully obtained, which simultaneously revealed the features of relaxor and antiferroelectricity. Specifically, the E b was significantly improved because of the reduced grain size, small sample thickness, exceptionally low dielectric loss, and a moderate dielectric constant. Finally, the sample with x = 0.12 showed an ultrahigh W rec value of 16.2 J/cm 3 and satisfactory η of 82.3% at 97 kV/mm, outperforming most state-of-the-art counterparts. Furthermore, the ceramic also exhibited a large current density (C D ) of 1268.4 A/cm 2 and power density (P D ) of 177.6 MW/cm 3 at 28 kV/mm, offering prospective applications in high-power capacitors. This work not only achieved outstanding comprehensive energy storage performance in sodium niobate-based ceramics by modulating the antiferroelectric structure but also provided a feasible route to developing high-performance dielectric capacitors from the viewpoint of structure−property relationship.

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Section: Introductionmentioning

confidence: 97%

Achieving Ultrahigh Energy Storage Density in Lead-Free Sodium Niobate-Based Ceramics by Modulating the Antiferroelectric Phase

Zhang

Guo

et al. 2022

Chem. Mater.

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“…Thus, leadfree dielectrics having the main components of BaTiO 3 (BT), SrTiO 3 (ST), Bi 0.5 Na 0.5 TiO 3 (BNT), BiFeO 3 (BF), NaNbO 3 , and K 0.5 Na 0.5 NbO 3 (KNN) have received significant attention in the field of energy storage ceramic capacitors. [19,[27][28][29][30][31][32][33][34][35] Of the various ceramic systems, BNT exhibits a large P max and is considered a potential candidate for application as an environmentally friendly dielectric capacitor. Unfortunately, the large hysteresis (namely large P r ) of the P-E loops of BNT ceramics restricts their improvement of W rec and η.…”

Section: Introductionmentioning

confidence: 99%

Boosting Energy Storage Performance of Lead‐Free Ceramics via Layered Structure Optimization Strategy

Yan

Bai

et al. 2022

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Owing to the current global scenario of environmental pollution and the energy crisis, the development of new dielectrics using lead‐free ceramics for application in advanced electronic and energy storage systems is essential because of the high power density and excellent stability of such ceramics. Unfortunately, most of them have low breakdown strength and/or low maximum polarization, resulting in low energy density and efficiency. To overcome this limitation here, lead‐free ceramics comprising a layered structure are designed and fabricated. By optimizing the distribution of the layered structure, a large maximum polarization and high applied electric field (>500 kV cm−1) can be achieved; these result in an ultrahigh recoverable energy storage density (≈7 J cm−3) and near ideal energy storage efficiency (≈95%). Furthermore, the energy storage performance without obvious deterioration over a broad range of operating frequencies (1–100 Hz), working temperatures (30–160 °C), and fatigue cycles (1–104). In addition, the prepared ceramics exhibit extremely high discharge energy density (4.52 J cm−3) and power density (405.50 MW cm−3). Here, the results demonstrate that the strategy of layered structure design and optimization is promising for enhancing the energy storage performance of lead‐free ceramics.

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“…To further evaluate the energy-storage properties, the Weibull breakdown electric field E B is calculated by a linear fitting between ln{ln[1/(1 − P i )]} and ln(E i ) using the Weibull distribution function. 37 Meanwhile, the unipolar P−E loops of SBT-xBNT-BMT ceramics at E B together with S3, from which a small difference among the W rec and η of different samples can be observed. 38 The electric field-dependent P−E loops and the calculated energy-storage properties of the x = 0.44 sample are exhibited in Figure 2c, d.…”

Section: Resultsmentioning

confidence: 95%

“…However, the excessive increment of BNT content leads to the early polarization saturation (the growth rate of P max slows down) and deteriorates the energy-storage properties (especially the η value), as shown in Figure b. To further evaluate the energy-storage properties, the Weibull breakdown electric field E B is calculated by a linear fitting between ln{ln[1/(1 – P i )]} and ln( E i ) using the Weibull distribution function . Meanwhile, the unipolar P – E loops of SBT- x BNT-BMT ceramics at E B together with corresponding energy-storage properties are exhibited in Figure S2.…”

Section: Resultsmentioning

confidence: 99%

Achieving Ultrahigh Energy-Storage Density with Excellent Thermal Stability in Sr_0.7Bi_0.2TiO₃-Based Relaxors via Polarization Behavior Modulation

Wang

Kang

Hong

et al. 2022

ACS Appl. Mater. Interfaces

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Dielectric capacitors possessing the inherent superiorities of high power density and ultrafast charge–discharge speed make their utilization in energy-storage devices extremely propitious, although the relatively low recoverable energy-storage density (W rec) may impede their applications. In this work, unlike the mainstream approach of destroying long-range ferroelectric/antiferroelectric order and inducing relaxor properties to achieve a high W rec value, we have selected end members with a high polarization gene to promote the polarization behavior of the typical relaxor Sr0.7Bi0.2TiO3. Therefore, an ultrahigh W rec ∼ 8 J/cm3 and a superior efficiency (η) ∼ 91% are accomplished in the 0.98[0.56(Sr0.7Bi0.2)TiO3-0.44(Bi0.5Na0.5)TiO3]-0.02 Bi(Mg0.5Ti0.5)O3 sample. The achieved W rec value is record high in Sr0.7Bi0.2TiO3-based systems as far as we know. The polarization-enhancement behavior can be explained by the phase field simulation results, phase content variance in X-ray diffraction Rietveld refinement, hardening trend in Raman spectroscopy, domain morphology, and local symmetry in transmission electron microscope analysis. Meanwhile, the ceramic possesses excellent thermal stability (ΔW rec < 12.7% and Δη < 10.4%, −50–200 °C), frequency (ΔW rec < 2.69% and Δη < 2.06%, 0.5–500 Hz), and fatigue-resistant stability (ΔW rec < 0.08% and Δη < 0.2%, up to 1 × 105 cycles). Accordingly, this work proposes a design idea to tailor the polarization behavior and energy-storage properties of typical relaxors.

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Extraordinary energy storage performance and thermal stability in sodium niobate-based ceramics modified by the ion disorder and stabilized antiferroelectric orthorhombic R phase

Abstract: Developing high-performance dielectric capacitors is essential to meet the growing demands of hybrid electric vehicles and high-power applications. The energy storage efficiency and the temperature-variant energy storage properties should be...

Cited by 34 publications

References 68 publications

Achieving Ultrahigh Energy Storage Density in Lead-Free Sodium Niobate-Based Ceramics by Modulating the Antiferroelectric Phase

Achieving Ultrahigh Energy Storage Density in Lead-Free Sodium Niobate-Based Ceramics by Modulating the Antiferroelectric Phase

Boosting Energy Storage Performance of Lead‐Free Ceramics via Layered Structure Optimization Strategy

Achieving Ultrahigh Energy-Storage Density with Excellent Thermal Stability in Sr_0.7Bi_0.2TiO₃-Based Relaxors via Polarization Behavior Modulation

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Extraordinary energy storage performance and thermal stability in sodium niobate-based ceramics modified by the ion disorder and stabilized antiferroelectric orthorhombic R phase

Abstract: Developing high-performance dielectric capacitors is essential to meet the growing demands of hybrid electric vehicles and high-power applications. The energy storage efficiency and the temperature-variant energy storage properties should be...

Cited by 34 publications

References 68 publications

Achieving Ultrahigh Energy Storage Density in Lead-Free Sodium Niobate-Based Ceramics by Modulating the Antiferroelectric Phase

Achieving Ultrahigh Energy Storage Density in Lead-Free Sodium Niobate-Based Ceramics by Modulating the Antiferroelectric Phase

Boosting Energy Storage Performance of Lead‐Free Ceramics via Layered Structure Optimization Strategy

Achieving Ultrahigh Energy-Storage Density with Excellent Thermal Stability in Sr0.7Bi0.2TiO3-Based Relaxors via Polarization Behavior Modulation

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Achieving Ultrahigh Energy-Storage Density with Excellent Thermal Stability in Sr_0.7Bi_0.2TiO₃-Based Relaxors via Polarization Behavior Modulation