Barium titanate/poly (vinylidene fluoride) nanocomposites with core–shell structure with high dielectric constant and temperature stability prepared via a cold sintering process

Kang, Shenglin; Wang, F.; Zhong, Xiangli; Wang, J. B.

doi:10.1007/s10854-020-03468-7

Cited by 19 publications

(4 citation statements)

References 41 publications

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“…In summary, the dielectric properties of the present ceramic polymer composite of ε r = 71.1 and tan δ = 0.04 with the advantages of simple and compact method were achieved. The system opens up new ways to design and construct of dielectric applications compared with other methods and sintered conditions, which should also be instructive in ferroelectrics and energy storage ceramics. − …”

Section: Resultsmentioning

confidence: 99%

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Vinoth

Wang

2023

Inorg. Chem.

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The sintering process is essential to transforming particular material into dense ceramics. Although several sintering techniques have emerged over the past few years, the process is still performed at high temperatures. The alternative cold sintering process (CSP) is a potential strategy for producing an advance high dielectric permittivity and enables densification at low temperature. In this process, the CSP technique has been applied to successfully prepare the BaTiO3/poly(vinylidene difluoride) (PVDF) nanocomposite. The inorganic material of the BaTiO3/PVDF nanocomposite was confirmed by various physical characterizations, and the densification studies were performed using a semiautomated press, indicating a dissolution–precipitation mechanism. When a uniaxial pressure of 350 MPa was applied, with transient liquid could be sintered at 190 °C, and a relative density of 94.8%. The nanocomposite exhibits an excellent dielectric properties like εr = 71.1 and tan δ = 0.04 with frequency range at 1 GHz for various dwelling times and maximize the electrical resistivity. The BaTiO3/PVDF composite indicating a breakthrough opportunity toward an increase of the high dielectric constant will be significantly impacted by cold sintering. It enables innovative materials design and integrated devices to advance modern electronic industry applications.

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Section: Resultsmentioning

confidence: 99%

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Vinoth

Wang

2023

Inorg. Chem.

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“…In general, the conduction loss and the dielectric polarization loss of dielectric materials are primarily responsible for the dielectric loss. Other contributing factors include the migration of space charges and the motion of molecular dipoles 43 , 44 .…”

Section: Resultsmentioning

confidence: 99%

Facile assembly of flexible quaternary SnO2/SrSnO3/Fe3O4/PVDF nanocomposites with tunable optical, electrical, and magnetic properties for promising magneto-optoelectronic applications

Ismail

Desouky

2023

Sci Rep

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Facile assembly, co-precipitation, and drop casting procedures have been used to construct SnO2/SrSnO3/Fe3O4/PVDF flexible nanocomposites. SnO2/SrSnO3/Fe3O4 nanocomposites (TSF NCs') have been successfully incorporated into polyvinylidene fluoride polymers (PF), according to the microstructural exploration of the systems, which was revealed by XRD, EDX, and ATR-FTIR analysis. The FESEM and cross-section areas demonstrated that the addition of TSF NCs' to PF porous material enhanced its surface characteristics and decreased its surface roughness. The optical gap was lowered from 3.90 to 3.07 eV, and it was discovered that both the refractive index and optical conductivity had improved when TSF NCs' were incorporated into PF. According to the observations, the supplement ratios have a profound influence on the dielectric properties of the nanocomposites. Moreover, the electrical parameters of TSF/PF nanocomposite are significantly modified. The TSF/PF magnetic nanocomposite has good magnetic reactivity and can be easily extracted from the aqueous solution using an external magnetic field, as demonstrated by VSM. This research has been conducted to obtain TSF/PF nanocomposites to be used in promising magno-optoelectronic applications.

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“…Despite these challenges, recent studies have demonstrated the feasibility of co-sintering various materials through CSP, enabling the fabrication of novel composite materials. Notably, low melting point materials such as thermoplastic [9], thermosetting [10], and 2D-nanostructured materials [11] can serve as transient liquid phases in CSP, modifying matrix material qualities including density, strength, hardness, and electrical properties [12,13]. For instance, Jing Guo et al [11] conducted CSP to manufacture a cold co-sintering process of 2D-MXene and ZnO at 300 ˚C for 1 hour under 250 MPa pressure, resulting in improved electrical conductivity with the addition of up to 5wt% Ti3C2Tx MXene.…”

Section: J U S T a C C E P T E Dmentioning

confidence: 99%

The role of γ-C ₂H ₅NO ₂ as a new transient liquid phase in cold sintering process of BaTiO ₃ composites

Noisak,

Ieamviteevanich,

Charoonsuk

et al. 2024

Journal of Advanced Ceramics

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Dielectric materials, like barium titanate-based (BT-based), have excellent dielectric properties but require high temperatures (above 1300 ˚C) for ceramic fabrication, leading to high costs and energy loss. The cold sintering process (CSP) offers a solution to these issues and is gaining worldwide attention as an innovative fabrication route. In this work, we proposed an alternative organic ferroelectric phase, gamma-glycine (γ-GC) that acts as a transient liquid phase to fabricate high-density composites with barium titanate (BT) at low-temperature through a CSP.Our findings show that the density of 15γ-GC/85BT reached 96.7±1.6% when sintered at 120 ˚C for 6 hours (h) under 10MPa uniaxial pressure. The SEM-EDS mapping of the composite suggested that γ-GC completely underwent the precipitation-dissolution process and, therefore, filled between BT particles. Moreover, XRD and FTIR confirmed the preservation of γ-GC without the undesired phase transformation. In addition, the ferroelectric and dielectric properties of the γ-GC/BT composites were reported. The high dielectric constant (εr) was 3600, and the low dielectric loss (tan δ) was 1.20 at 200 ˚C, 100 kHz, with 15γ-GC/85BT composite. The hysteresis loop showed a remanent polarization (Pr) of 0.55 µC.cm -2 and a coercive field (Ec) of 7.25 kV.cm -1 . Our findings reaffirmed that organic ferroelectric material (γ-GC) can act as a transient liquid phase in a CSP that can successfully and sustainably fabricate γ-GC/BT composites at low temperatures while delivering outstandingly high performance.

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Barium titanate/poly (vinylidene fluoride) nanocomposites with core–shell structure with high dielectric constant and temperature stability prepared via a cold sintering process

Cited by 19 publications

References 41 publications

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Facile assembly of flexible quaternary SnO2/SrSnO3/Fe3O4/PVDF nanocomposites with tunable optical, electrical, and magnetic properties for promising magneto-optoelectronic applications

The role of γ-C ₂H ₅NO ₂ as a new transient liquid phase in cold sintering process of BaTiO ₃ composites

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Barium titanate/poly (vinylidene fluoride) nanocomposites with core–shell structure with high dielectric constant and temperature stability prepared via a cold sintering process

Cited by 19 publications

References 41 publications

Cold Sintering Process for a BaTiO3/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Cold Sintering Process for a BaTiO3/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Facile assembly of flexible quaternary SnO2/SrSnO3/Fe3O4/PVDF nanocomposites with tunable optical, electrical, and magnetic properties for promising magneto-optoelectronic applications

The role of γ-C 2H 5NO 2 as a new transient liquid phase in cold sintering process of BaTiO 3 composites

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Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

The role of γ-C ₂H ₅NO ₂ as a new transient liquid phase in cold sintering process of BaTiO ₃ composites