Ultrahigh energy density in short-range tilted NBT-based lead-free multilayer ceramic capacitors by nanodomain percolation

Ji, Hongfen; Wang, Dawei; Bao, Weichao; Lu, Zhilun; Wang, Ge; Yang, Huijing; Mostaed, Ali; Li, Linhao; Feteira, Antônio; Sun, Shi‐Kuan; Xu, Fangfang; Li, Dejun; Ma, Chaojie; Liu, Shiyu; Reaney, Ian M.

doi:10.1016/j.ensm.2021.01.023

Cited by 172 publications

(105 citation statements)

References 61 publications

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“… 438 NBT–0.45SBT ceramic MLs have also been reported to exhibit W rec ∼ 9.5 J cm –3 with η ∼ 95% at 720 kV cm –1 , 222 which were further improved by forming a solid solution with a third perovskite end-member, 10%BMN to give W rec ∼ 18 J cm –3 with η > 90% at 1000 kV cm –1 , by Ji and co-workers, Figures 31 c,d. 337 The highest among all lead/lead-free ceramic MLs, W rec ∼ 21.5 J cm –3 at ∼1030 kV cm –1 , however, was achieved for textured NBT–0.3SBT ceramic MLs. 439 Texturing was achieved through the use of <111>-oriented ST platelets which reduced field-induced strain at high field thus enhancing the BDS greatly.…”

Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 93%

Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 99%

“…If the transition is smeared over for the operational range through alloying or doping to create a so-called “weakly coupled relaxor state”, η > 90% can be achieved. 43 , 209 , 337 …”

Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 99%

“… (a) Temperature- 42 , 43 , 130 , 131 , 208 , 242 , 297 , 337 , 348 , 352 , 357 , 359 and (b) frequency-dependent W rec for some reported electroceramic materials for high energy density capacitors. 276 , 295 , 297 , 337 , 416 …”

Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 99%

Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 99%

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Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

et al. 2021

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Materials exhibiting high energy/power density are currently needed to meet the growing demand of portable electronics, electric vehicles and large-scale energy storage devices. The highest energy densities are achieved for fuel cells, batteries, and supercapacitors, but conventional dielectric capacitors are receiving increased attention for pulsed power applications due to their high power density and their fast charge–discharge speed. The key to high energy density in dielectric capacitors is a large maximum but small remanent (zero in the case of linear dielectrics) polarization and a high electric breakdown strength. Polymer dielectric capacitors offer high power/energy density for applications at room temperature, but above 100 °C they are unreliable and suffer from dielectric breakdown. For high-temperature applications, therefore, dielectric ceramics are the only feasible alternative. Lead-based ceramics such as La-doped lead zirconate titanate exhibit good energy storage properties, but their toxicity raises concern over their use in consumer applications, where capacitors are exclusively lead free. Lead-free compositions with superior power density are thus required. In this paper, we introduce the fundamental principles of energy storage in dielectrics. We discuss key factors to improve energy storage properties such as the control of local structure, phase assemblage, dielectric layer thickness, microstructure, conductivity, and electrical homogeneity through the choice of base systems, dopants, and alloying additions, followed by a comprehensive review of the state-of-the-art. Finally, we comment on the future requirements for new materials in high power/energy density capacitor applications.

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Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 93%

Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 99%

“…If the transition is smeared over for the operational range through alloying or doping to create a so-called “weakly coupled relaxor state”, η > 90% can be achieved. 43 , 209 , 337 …”

Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 99%

Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 99%

Section: State-of-the-art In Electroceramics For Energy Storagementioning

confidence: 99%

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Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

et al. 2021

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Outstanding Energy Storage Performance in High‐Hardness (Bi_0.5K_0.5)TiO₃‐Based Lead‐Free Relaxors via Multi‐Scale Synergistic Design

Chen

Long

et al. 2021

Adv Funct Materials

104

102

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Lead‐free dielectric ceramics with ultrahigh energy storage performance are the best potential stocks used in next‐generation advanced pulse power capacitors. Here, an ultrahigh recoverable energy storage density Wrec of ≈7.57 J cm−3 and a large efficiency η of ≈81.4% are first realized in (Bi0.5K0.5)TiO3 (BKT)‐based relaxor ferroelectric ceramics with an ultrahigh Vickers hardness Hv ≈ 8.63 Gpa by adding BaTiO3 and NaNbO3 in order to synergistically design the domain and microstructure in multiscale, leading to the existence of ultrasmall polar nanoregions, ultrafine grain size, compact grain boundaries, dense microstructure, and large band gap Eg simultaneously. Encouragingly, an excellent energy storage temperature stability (Wrec ≈ 4.31 ± 0.25 J cm−3, η ≈ 86 ± 5%, 20–200 °C), frequency stability (Wrec ≈ 5.14 ± 0.12 J cm−3, η ≈ 81.3 ± 1.2%, 5–100 Hz), and excellent charge/discharge performance (power density PD ≈ 103.2 MW cm−3, discharge energy density WD ≈ 2.4 J cm−3, discharge rate t0.9 ≈ 130 ns) are also achieved in BKT‐based ceramics. The results demonstrate that BKT‐based ceramics can be very competitive lead‐free relaxors for energy storage capacitors in pulsed power devices.

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Superior High‐Temperature Energy Density in Molecular Semiconductor/Polymer All‐Organic Composites

Zhang

Chen

Pan

et al. 2022

Adv Funct Materials

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High‐temperature dielectric polymers are in constant demand for the multitude of high‐power electronic devices employed in hybrid vehicles, grid‐connected photovoltaic and wind power generation, to name a few. There is still a lack, however, of dielectric polymers that can work at high temperature (> 150 °C). Herein, a series of all‐organic dielectric polymer composites have been fabricated by blending the n‐type molecular semiconductor 1,4,5,8‐naphthalenetetracarboxylic dianhydride (NTCDA) with polyetherimide (PEI). Electron traps are created by the introduction of trace amounts of n‐type small molecule semiconductor NTCDA into PEI, which effectively reduces the leakage current and improves the breakdown strength and energy storage properties of the composite at high temperature. Especially, excellent energy storage performance is achieved in 0.5 vol.% NTCDA/PEI at the high temperatures of 150 and 200 °C, e.g., ultrahigh discharge energy density of 5.1 J cm−3 at 150 °C and 3.2 J cm−3 at 200 °C with high discharge efficiency of 85–90%, which is superior to its state‐of‐the‐art counterparts. This study provides a facile and effective strategy for the design of high‐temperature dielectric polymers for advanced electronic and electrical systems.

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Ultrahigh energy density in short-range tilted NBT-based lead-free multilayer ceramic capacitors by nanodomain percolation

Cited by 172 publications

References 61 publications

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

Outstanding Energy Storage Performance in High‐Hardness (Bi_0.5K_0.5)TiO₃‐Based Lead‐Free Relaxors via Multi‐Scale Synergistic Design

Superior High‐Temperature Energy Density in Molecular Semiconductor/Polymer All‐Organic Composites

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Ultrahigh energy density in short-range tilted NBT-based lead-free multilayer ceramic capacitors by nanodomain percolation

Cited by 172 publications

References 61 publications

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

Outstanding Energy Storage Performance in High‐Hardness (Bi0.5K0.5)TiO3‐Based Lead‐Free Relaxors via Multi‐Scale Synergistic Design

Superior High‐Temperature Energy Density in Molecular Semiconductor/Polymer All‐Organic Composites

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Outstanding Energy Storage Performance in High‐Hardness (Bi_0.5K_0.5)TiO₃‐Based Lead‐Free Relaxors via Multi‐Scale Synergistic Design