Optimizing energy storage properties under moderate electric fields in Na0.5Bi0.5TiO3-based ceramics via configuration entropy modulation

Chen, Zhemin; Pu, Yongping; Zhang, Lei; Ning, Yating; Wu, Chunhui; Wang, Bo; Zhang, Xuqing

doi:10.1016/j.ceramint.2023.07.004

Cited by 6 publications

(2 citation statements)

References 42 publications

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“…All samples can observe dense microstructure, homogeneous grains, and clear grain boundaries. Based on our previous study, as the incorporation of SANT, the average grain size (AGS) significantly reduces from 1.96 μm at x = 0 to 0.79 μm at x = 0.16 11 . This phenomenon is attributed to the introduction of ions with larger radius and mass, which reduces the ion diffusion rate and inhibits grain growth 28,33,34 .…”

Section: Resultsmentioning

confidence: 93%

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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: 93%

“…For example, Chen et al. obtained high W rec (4.28 J/cm 3 ) and η (92.6 %) in (Na 0.5 Bi 0.47 La 0.03 ) 0.94 Ba 0.06 TiO 3 ceramic by configuration entropy modulation 11 . Wang et al.…”

Section: Introductionmentioning

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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Antiferroelectric AgNbO₃@KH550 Doped PVDF/PMMA Composites with High Energy Storage Performance

Wang,

Kang,

et al. 2023

Macromol. Rapid Commun.

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The residual polarization of antiferroelectric ceramics is very small, yet they possess high energy storage density and efficiency. Incorporating antiferroelectric ceramic particles into a polymer matrix is beneficial for improving the energy storage performance of composites. However, excessive amounts of ceramic particles can lead to aggregation within the polymer, resulting in defects and a significant reduction in composite film performance. In this study, the antiferroelectric AgNbO3 is selected as the filler and modified with silane coupling agent KH550. poly(vinylidene fluoride) (PVDF) and polymethyl methacrylate (PMMA) are blended as the matrix, and the energy storage performance of the composite is improved by adjusting the additional amount of PVDF. The structure, dielectric properties, and energy storage properties of the composites are systematically studied. The results show that hydrogen bonds are formed between PVDF and PMMA, and PVDF and PMMA are tightly bonded under the action of hydrogen bonds. The compatibility of PVDF with PMMA is optimal when the mass fraction of PVDF is 30 wt%. Moreover, with the synergistic effect of the antiferroelectric filler AgNbO3, the breakdown strength of AgNbO3/PVDF/PMMA composites reaches 430 kV mm−1, and the energy storage density reaches 14.35 J cm−3.

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Remarkable energy storage capability and dielectric temperature stability in (Na0.5Bi0.5)TiO3-based medium entropy superparaelectrics

Chen,

Pu,

Ning

et al. 2024

Chemical Engineering Journal

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Optimizing energy storage properties under moderate electric fields in Na0.5Bi0.5TiO3-based ceramics via configuration entropy modulation

Cited by 6 publications

References 42 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

Antiferroelectric AgNbO₃@KH550 Doped PVDF/PMMA Composites with High Energy Storage Performance

Remarkable energy storage capability and dielectric temperature stability in (Na0.5Bi0.5)TiO3-based medium entropy superparaelectrics

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Optimizing energy storage properties under moderate electric fields in Na0.5Bi0.5TiO3-based ceramics via configuration entropy modulation

Cited by 6 publications

References 42 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

Antiferroelectric AgNbO3@KH550 Doped PVDF/PMMA Composites with High Energy Storage Performance

Remarkable energy storage capability and dielectric temperature stability in (Na0.5Bi0.5)TiO3-based medium entropy superparaelectrics

Contact Info

Product

Resources

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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

Antiferroelectric AgNbO₃@KH550 Doped PVDF/PMMA Composites with High Energy Storage Performance