Modulating the energy storage performance of NaNbO3-based lead-free ceramics for pulsed power capacitors

Lai, Dongyu; Yao, Zhonghua; You, Wei; Gao, Biao; Guo, Qi; Lu, Ping; Ullah, Asmat; Hao, Hua; Cao, Minghe; Liu, Hanxing

doi:10.1016/j.ceramint.2020.02.135

Cited by 46 publications

(15 citation statements)

References 51 publications

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“…17 These results show that the doping of bismuth perovskite into the NN ceramics to form a solid solution will induce a larger E b and a smaller P r that can effectively improve its energy storage properties. 15,18 By contrast, in previous studies, it was rarely possible to obtain an ultrahigh W rec (5 J cm −3 ) and η (80%) simultaneously.…”

Section: ■ Introductionmentioning

confidence: 80%

Ultrahigh Energy Storage Characteristics of Sodium Niobate-Based Ceramics by Introducing a Local Random Field

Pang

Chen

Sun

et al. 2020

ACS Sustainable Chem. Eng.

102

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Lead-free ceramic capacitors are widely applied for novel pulse power supply systems owing to their environmental friendliness, high power density, and fast charge−discharge characteristics. Nevertheless, the simultaneous achievement of a higher recoverable energy storage density (W rec ) and efficiency (η) is still challenging and must be investigated. To obtain a dielectric capacitor with a high W rec and η, the energy storage characteristics can be improved by reducing the residual polarization and increasing the breakdown strength. In this work, the doping modification of the NaNbO 3 (NN) ceramics is used to produce a local random field to improve the electrical breakdown strength, obtaining a lead-free dielectric capacitor with high energy storage characteristics. According to this strategy, Bi(Ni 0.67 Ta 0.33 )O 3 is added to NN, and an ultrahigh E b is obtained so that the ceramics have ideal W rec and η values. 0.85NN−0.15Bi(Ni 0.67 Ta 0.33 )O 3 has a very high W rec (5.53 J cm −3 ) and η (82.0%) at 575 kV cm −1 . Furthermore, the energy storage characteristics of the ceramics exhibit good thermal stability and frequency stability that are superior to those of most of the lead-free dielectric capacitors reported to date. In particular, the 0.85NN−0.15 Bi 0.5 Na 0.5 TiO 3 (0.85NN−0.15BNT) ceramic also allows an ultrafast discharge time (t 0.9 = 27.5 ns), large current density (C D = 506.42 A cm −2 ), and higher power density (P D = 35.45 mW cm −3 ). These results indicate that (1 − x)NN−xBNT ceramics are promising for applications in lead-free dielectric ceramic capacitors with a high energy storage density and conversion efficiency.

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Section: ■ Introductionmentioning

confidence: 80%

Ultrahigh Energy Storage Characteristics of Sodium Niobate-Based Ceramics by Introducing a Local Random Field

Pang

Chen

Sun

et al. 2020

ACS Sustainable Chem. Eng.

102

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“…20,21 The peak near 0 °C was due to the interference of ice during cooling rather than a phase transition. 9,22 It is also worth noting that 0.09BMS ceramics have extremely low dielectric losses and a medium temperature-insensitive dielectric constant that make 0.09BMS ceramics obtain extremely high BDS. 15 Based on the slope of ln(1/ε − 1/ε m ) to ln(T − T m ) at 50 kHz, the γ value of xBMS ceramics is obtained, and the results are shown in Figure 4a.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Through the analysis and summary of the literature on the direction of energy storage, it was found that by introducing a second component to partially replace the A- and B-sites of NN ceramics, the original ferroelectric long-range order can be destroyed, and a local random field can be formed. This makes NN-based ceramics yield slender hysteretic loops, relaxor characteristics are improved, P r is significantly reduced, and an excellent energy-storage performance is obtained. − For example, Zhou et al reported that the addition of a certain amount of Bi 2 O 3 to NaNbO 3 effectively reduced P r and enhanced BDS. This yielded ultrahigh energy-storage efficiency (85.4%) and recoverable energy-storage density (4.03 J/cm 3 ) at 250 kV/cm .…”

Section: Introductionmentioning

confidence: 99%

Bi(Mg_0.5Sn_0.5)O₃-Doped NaNbO₃ Lead-free Ceramics Achieve Excellent Energy-Storage and Charge/Discharge Performances

Pang

Chen

Shi

et al. 2021

ACS Sustainable Chem. Eng.

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It is difficult for dielectric capacitors to achieve high recoverable energy density and energy efficiency simultaneously. The introduction of heterovalent ions into the A- and B-sites of NaNbO3 produces a local random field that improves the relaxor and the energy-storage performances. According to this strategy, (1 – x)NaNbO3–xBi(Mg0.5Sn0.5)O3(xBMS, x = 0.03, 0.05, 0.07, and 0.09) ceramics with high-energy-storage and excellent charge/discharge performances were prepared. Among them, the 0.09BMS ceramic achieved a large and recoverable energy-storage density (W rec = 4.93 J/cm3) and high energy-storage efficiency (η = 81.5%). Furthermore, this energy-storage performance yielded excellent frequency and temperature stability (W rec fluctuated by 6% in the temperature range of 20–180 °C and by 4.5% in the frequency range of 2–100 Hz). In addition, 0.09BMS ceramics have a high current density (C D = 971.93 A/cm2) and power density (P D = 87.47 MW/cm3) and an ultrafast discharge time (t 0.9 = 25 ns). The abovementioned results show that the 0.09BMS ceramics are materials that exhibit promise for use in pulsed-power systems.

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“…[55] This result demonstrates that the incorporation of BST is beneficial to the break of the long-range FE order and enhancing the relaxor characteristics. [21,56] Figure 3a illustrates the bipolar P-E loops of the (1-x)NN-xBST ceramics with different BST contents under 120 kV cm À1 and the corresponding polarization current as a function of electric field curves are presented in Figure 3b. It can be observed that the 0.90NN-0.10BST ceramic shows a typical fat FE hysteresis loop with two current peaks lying around AE17 kV cm À1 , demonstrating the FE nature of the ceramic.…”

Section: Resultsmentioning

confidence: 99%

“…This phenomenon demonstrates that more and more long-range polar FE orders are disrupted into fragmented short-range polar states with the increase in BST content, which might be due to the local random field generated by the ion random distribution and charge imbalances. [43,56] Figure 3c reveals the unipolar P-E loops of the (1-x)NN-xBST ceramics and Figure 3d exhibits the variations of W rec and η with different BST contents under 120 kV cm À1 . As can be seen, the W rec increases from 0.47 J cm À3 for x ¼ 0.10 to 0.90 J cm À3 for x ¼ 0.20 and then decreases to 0.65 J cm À3 for x ¼ 0.40, while the corresponding η increases from 57.75% to 94.16% and then decreases to 85.70%.…”

Section: Resultsmentioning

confidence: 99%

High Capacitive Performance Achieved in NaNbO₃‐Based Ceramics via Grain Refinement and Relaxation Enhancement

Xiao

et al. 2021

Energy Tech

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Lead‐free antiferroelectric (AFE) energy storage material NaNbO3 has received increasing attention because of the advantages of low density, low cost, and environmental friendliness. Nevertheless, square P–E hysteresis loops and low electric breakdown strength suppress the realistic energy storage applications of the pristine NaNbO3 ceramic. Herein, the Ba0.6Sr0.4TiO3 relaxor ferroelectric is introduced into the NaNbO3 AFE ceramic, aiming to enhance energy storage performances. (1–x)NaNbO3–xBa0.6Sr0.4TiO3 ceramics with different doping levels are manufactured via the conventional solid‐state processing route. A remarkable recoverable energy storage density (W rec ≈ 3.04 J cm−3) and a high efficiency (η ≈ 88.83%) are achieved synchronously in the ceramic with x = 0.20, under an applied electric field of 320 kV cm−1, benefiting from the enhanced relaxor behavior and reduced grain size caused by the introduction of Ba0.6Sr0.4TiO3. Furthermore, excellent frequency stability (5–1000 Hz) and temperature stability (20–150 °C) along with outstanding fatigue resistance (up to 2 × 105cycles) are also achieved. Moreover, the ceramic displays outstanding charge–discharge capabilities such as big current density (C D ≈ 1096.23 A cm−2), high power density (P D ≈ 106.7 MV cm−3) and fast discharge speed (t 0.9 ≈ 142 ns). These results demonstrate that the Ba0.6Sr0.4TiO3 modified NaNbO3‐based ceramics could be competitive candidates for high power systems.

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Modulating the energy storage performance of NaNbO3-based lead-free ceramics for pulsed power capacitors

Cited by 46 publications

References 51 publications

Ultrahigh Energy Storage Characteristics of Sodium Niobate-Based Ceramics by Introducing a Local Random Field

Ultrahigh Energy Storage Characteristics of Sodium Niobate-Based Ceramics by Introducing a Local Random Field

Bi(Mg_0.5Sn_0.5)O₃-Doped NaNbO₃ Lead-free Ceramics Achieve Excellent Energy-Storage and Charge/Discharge Performances

High Capacitive Performance Achieved in NaNbO₃‐Based Ceramics via Grain Refinement and Relaxation Enhancement

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Modulating the energy storage performance of NaNbO3-based lead-free ceramics for pulsed power capacitors

Cited by 46 publications

References 51 publications

Ultrahigh Energy Storage Characteristics of Sodium Niobate-Based Ceramics by Introducing a Local Random Field

Ultrahigh Energy Storage Characteristics of Sodium Niobate-Based Ceramics by Introducing a Local Random Field

Bi(Mg0.5Sn0.5)O3-Doped NaNbO3 Lead-free Ceramics Achieve Excellent Energy-Storage and Charge/Discharge Performances

High Capacitive Performance Achieved in NaNbO3‐Based Ceramics via Grain Refinement and Relaxation Enhancement

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Product

Resources

About

Bi(Mg_0.5Sn_0.5)O₃-Doped NaNbO₃ Lead-free Ceramics Achieve Excellent Energy-Storage and Charge/Discharge Performances

High Capacitive Performance Achieved in NaNbO₃‐Based Ceramics via Grain Refinement and Relaxation Enhancement