Current development, optimisation strategies and future perspectives for lead-free dielectric ceramics in high field and high energy density capacitors

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review highlights the remarkable advancements and future trends in bulk ceramics, MLCCs ceramic thin films for lead-free high field energy density capacitors.

Language: Английский

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Enhanced energy storage performance of Bi0.5Na0.5TiO3-based ceramics via grain tuning and relaxor construction

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 455, P. 140924 - 140924

Published: Dec. 12, 2022

Language: Английский

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Delayed Polarization Saturation Induced Superior Energy Storage Capability of BiFeO₃‐Based Ceramics Via Introduction of Non‐Isovalent Ions

Small, Journal Year: 2023, Volume and Issue: 19(14)

Published: Jan. 10, 2023

Electrostatic capacitors are emerging as a highly promising technology for large-scale energy storage applications. However, it remains significant challenge to improve their densities. Here, an effective strategy of introducing non-isovalent ions into the BiFeO3 -based (BFO) ceramic capability via delaying polarization saturation is demonstrated. Accordingly, ultra-high density up 7.4 J cm-3 and high efficiency ≈ 81% at 680 kV m-1 realized, which one best performances recorded BFO-based ceramics. The outstanding comprehensive performance attributed inhibiting hysteresis resulting from generation ergodic relaxor zone random field, generating highly-delayed with continuously-increased magnitudes electric field supercritical evolution. contributions demonstrate that consideration designing next lead-free dielectric materials performance.

Language: Английский

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Simultaneous enhancement of energy storage performance and thermal stability of NaNbO3-based ceramics via multi-scale modulation

Journal of Materiomics, Journal Year: 2023, Volume and Issue: 10(3), P. 670 - 681

Published: Oct. 10, 2023

More and more attention is being paid to the environmental friendliness of dielectric capacitors, which have a rapid charging discharging speed steady operation. However, low recoverable energy storage density (Wrec) limits practical application capacitors in solid-state devices. In this paper, (1–x) (0.92NaNbO3-0.08Bi(Mg0.5Ti0.5)O3)-xSrTiO3(x = 0.05, 0.10, 0.15, 0.20) ceramics were fabricated based on various strategies such as nanodomain engineering, component grain size optimization. Thus excellent performance (Wrec ∼ 6.0 J/cm3, η 81.0%) was obtained NN-BMT-0.15ST. SrTiO3 could enhance internal disorder, improve relaxation properties increase breakdown field strength ceramics. Signifi-cantly domain relaxor behavior, evidenced by Vogel-Fulcher (V-F) model, provides strong evidence for restraining early polarization saturation. addition, Pulse charge/discharge tests illustrated that sample has stable (CD 1068.9 A/cm2, PD 96.1 MW/cm3, t0.9 ≈ 0.99 μs) It concluded there huge prospect NN-BMT-0.15ST kind pulsed-power-storing electronics.

Language: Английский

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High Energy Density Achieved in Novel Lead-Free BiFeO₃–CaTiO₃ Ferroelectric Ceramics for High-Temperature Energy Storage Applications

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(3), P. 3654 - 3664

Published: Jan. 11, 2024

The development of high-performance electrostatic energy storage dielectrics is essential for various applications such as pulsed-power technologies, electric vehicles (EVs), electronic devices, and the high-temperature aviation sector. However, usage lead a crucial component in conventional dielectric materials has raised severe environmental concerns. As result this, there an urgent need to explore lead-free alternatives. Ferroelectric ceramics offer high density but lack stability at temperatures. Here we present (1 – x)BiFeO3–xCaTiO3 (x = 0.6, 0.7, 0.8; BFO-CTO) ceramic capacitor with low loss, thermal stability, up ∼200 °C. introduction CTO 0.7) BFO matrix triggers transition from normal ferroelectrics relaxor state, resulting recoverable 1.18 J cm–3 190 °C ultrafast relaxation time 44 μs. These results promising, environmentally friendly, high-capacity material high-frequency applications.

Language: Английский

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Optimizing energy storage under low electric field in A-site dysprosium modified BiFeO3-BaTiO3 ceramics

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 983, P. 173918 - 173918

Published: Feb. 20, 2024

Language: Английский

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Superior energy storage properties of (1-x)Ba0.85Ca0.15Zr0.1Ti0.9O3-xBi(Mg2/3Ta1/3)O3 lead-free ceramics

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 946, P. 169300 - 169300

Published: Feb. 15, 2023

Language: Английский

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Realizing high energy density in BiFeO3-based ceramics capacitors via bandgap engineering and polarization optimization

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 461, P. 142071 - 142071

Published: Feb. 22, 2023

Language: Английский

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Optimized energy storage performance in NaNbO3-based ceramics via composition modification and micro-structure control

Ceramics International, Journal Year: 2023, Volume and Issue: 49(9), P. 14135 - 14144

Published: Jan. 2, 2023

Language: Английский

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Enhanced energy storage density and efficiency in La(Mg2/3Ta1/3)O3-doped BiFeO3 based ceramics

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 948, P. 169723 - 169723

Published: March 20, 2023

Language: Английский

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