Achieving high dielectric energy-storage properties through a phase coexistence design and viscous polymer process in BNT-based ceramics

Yang, Yule; Wang, Juanjuan; Jing, Ruiyi; Shi, Wenjing; Zhang, Leiyang; Li, Chao; Zeng, Xinyu; Chen, Fukang; Liu, Gang; Chao, Xiaolian; Yan, Yan; Jin, Li

doi:10.1016/j.jmat.2023.03.006

Cited by 4 publications

(3 citation statements)

References 73 publications

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“…In addition, the sharp peak of I‐E loops gradually disappears. The reasons for these phenomena are the disruption of long‐range ferroelectric order, the enhancement of relaxation behavior and the weakening of ferroelectricity 17,50 . Especially, the calculated value of W rec and η for (1‐ x )NBLBT‐ x SANT ceramics are shown in Figure 6(C).…”

Section: Resultsmentioning

confidence: 99%

“…Ultimately, a prominent W rec of 6.89 J/cm 3 and η of 90.1% are simultaneously realized under 520 kV/cm. Figure 7(C) shows the comparison of W rec and η for 0.84NBLBT‐0.16SANT ceramic with other lead‐free ceramics 14,24,28,35,46,47,50,52–60 . Apparently, most studies were difficult to simultaneously realize ultra‐high W rec (>6 J/cm 3 ) and η ( > 90 %).…”

Section: Resultsmentioning

confidence: 99%

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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%

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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“…Moreover, a stable operating temperature of 150 • C has been achieved by changing the phase structure of BNT ceramic from R3c to R3c/P4bm coexisting phase. This is achieved by adding Pb(Mg 1/3 Nb 2/3 )O 3 (PMN) and (Bi 0•1 Sr 0.85 )TiO 3 (BST) to a non-stoichiometric BNT composite, making the material more ferroelectric relaxor by lowering the remnant polarization and keeping the maximum polarization [35]. Furthermore, zirconium (Zr)-modified BNKT ceramics have been synthesized, and their electromechanical properties have been investigated.…”

Section: Introductionmentioning

confidence: 99%

The influence of thermo-electromechanical coupling on the performance of lead-free BNT-PDMS piezoelectric composites

Akshayveer,

Buroni,

Melnik

et al. 2024

Smart Mater. Struct.

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In recent times, there have been notable advancements in haptic technology,particularly in screens found on mobile phones, laptops, light-emittingdiode (LED) screens, and control panels. However, it is essentialto note that the progress in high-temperature haptic applicationsis still in the developmental phase. Due to its complex phase anddomain structures, lead-free piezoelectric materials such as {\normalsize{}$Bi_{0.5}Na_{0.5}TiO_{3}$}(BNT)-based haptic technology behave differently at high temperaturesthan ambient conditions. Therefore, it is essential to investigatethe aspects of thermal management and thermal stability, as temperatureplays a vital role in the phase and domain transition of BNT material.A two-dimensional thermo-electromechanical model has been proposedin this study to analyze the thermal stability of the BNT-PDMS compositeby analyzing the impact of temperature on effective electromechanicalproperties and mechanical and electric field parameters. However,the thermo-electromechanical modelling of the BNT-PDMS composite examinesthe macroscopic effects of the applied thermal field on mechanicaland electric field parameters, as phase change and microdomain dynamicsare not considered in this model. This study analyzes the impact ofthermo-electromechanical coupling on the performance of the BNT-PDMScomposite compared to conventional electromechanical coupling. Theresults predicted a significant improvement in piezoelectric responsecompared to electromechanical coupling due to increased thermoelectriceffect in the absence of phase change and microdomain switching fortemperature boundary conditions below depolarization temperature ($T_{d}\sim200\lyxmathsym{\textcelsius}$for pure BNT material).

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Energy storage properties and stability in Nd3+/Ta5+ modified 0.6Na0.5Bi0.5TiO3-0.4Sr0.7Bi0.2TiO3 lead-free relaxor ferroelectric ceramics under a low electric field

Wang,

Zhao,

Shi

et al. 2024

Ceramics International

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Achieving high dielectric energy-storage properties through a phase coexistence design and viscous polymer process in BNT-based ceramics

Cited by 4 publications

References 73 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

The influence of thermo-electromechanical coupling on the performance of lead-free BNT-PDMS piezoelectric composites

Energy storage properties and stability in Nd3+/Ta5+ modified 0.6Na0.5Bi0.5TiO3-0.4Sr0.7Bi0.2TiO3 lead-free relaxor ferroelectric ceramics under a low electric field

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Achieving high dielectric energy-storage properties through a phase coexistence design and viscous polymer process in BNT-based ceramics

Cited by 4 publications

References 73 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

The influence of thermo-electromechanical coupling on the performance of lead-free BNT-PDMS piezoelectric composites

Energy storage properties and stability in Nd3+/Ta5+ modified 0.6Na0.5Bi0.5TiO3-0.4Sr0.7Bi0.2TiO3 lead-free relaxor ferroelectric ceramics under a low electric field

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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