High energy density with ultrahigh discharging efficiency obtained in ceramic-polymer nanocomposites using a non-ferroelectric polar polymer as matrix

Lü, Xu; Zou, Xiaowan; Shen, Jialiang; Zhang, Lin; Jin, Li; Cheng, Z.-Y.

doi:10.1016/j.nanoen.2020.104551

Cited by 76 publications

(54 citation statements)

References 76 publications

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“…It was reported that the glass transition of PVTC was about −40 °C [ 40 ], and a relaxation process can be clearly observed in Figure 3 a, where the dielectric constant of PVTC increases rapidly due to molecular chain segment movement during the glass transition process around −40 °C accompanying a dielectric loss peak and the peak-temperature increases with the increase of measured frequency. As shown in Figure 3 b, the relaxation due to the rotation of the partial rotation of −COOCH 3 side groups of PMMA and glass transition processes were observed at 40 and 120 °C, respectively [ 41 ]. In Figure 3 c, three relaxation peaks to PVTC and one relaxation peak of PMMA can be observed.…”

Section: Resultsmentioning

confidence: 99%

“…The addition of defects in the form of TrFE and CFE molecules in the polymer chain serves to interrupt the ferroelectric domain, thereby reducing its size [ 40 ]. Polymethyl methacrylate (PMMA), or plexiglass, is a transparent polar non-ferroelectric polymer [ 41 , 42 ]. The PVTC layer (with high dielectric constant) is the polarization layer which provides the polarization, and the PMMA layer (with high breakdown strength and low leakage current) is the breakdown layer which bears a bigger electric field.…”

Section: Introductionmentioning

confidence: 99%

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Improved Energy Storage Performance of All-Organic Composite Dielectric via Constructing Sandwich Structure

et al. 2020

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Improving the energy storage density of dielectrics without sacrificing charge-discharge energy storage efficiency and reliability is crucial to the performance improvement of modern electrical and electronic systems, but traditional methods of doping high-dielectric ceramics cannot achieve high energy storage densities without sacrificing reliability and storage efficiency. Here, an all-organic energy storage dielectric composed of ferroelectric and linear polymer with a sandwich structure is proposed and successfully prepared by the electrostatic spinning method. Additionally, the effect of the ferroelectric/linear volume ratio on the dielectric properties, breakdown, and energy storage is systematically studied. The results show that the structure has good energy storage characteristics with a high energy storage density (9.7 J/cm3) and a high energy storage efficiency (78%). In addition, the energy storage density of the composite dielectric under high energy storage efficiency (90%) is effectively improved (25%). This result provides theoretical analysis and experience for the preparation of multilayer energy storage dielectrics which will promote the development and application of energy storage dielectrics.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved Energy Storage Performance of All-Organic Composite Dielectric via Constructing Sandwich Structure

et al. 2020

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“…where U d and U c are the energy density during the discharging and charging processes, respectively [33], [34]. The calculated energy storage densities and efficiencies of the composite dielectrics are presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Energy Storage Characteristics in PVDF-Based Nanodielectrics With Core-Shell Structured and Optimized Shape Fillers

et al. 2020

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Introducing high-permittivity nano-fillers into a dielectric polymer is a practical way to enhance the permittivity of nanocomposite dielectrics. However, this normally leads to a decrease in the breakdown strength, which has limited the development of electrostatic capacitors. In this work, silica (SiO 2) coating and polydopamine (PDA) surface modification methods were combined for enhancement of the breakdown strength; we prepared poly(vinylidene fluoride) (PVDF) based composite dielectrics doped using double core-shell structure BaTiO 3 nano-particles (BT NPs) and nano-fibers (NFs) (PDA-SiO 2 @BT NPs/PVDF or PDA-SiO 2 @BT NFs/PVDF). Then, the contributions of the double-layer core-shell structure and filler shape to improving the energy storage performance of the dielectrics were systematically discussed. The results show that the synergy between the silica and PDA effectively increased the breakdown strength. Furthermore, the dielectric properties and energy storage properties of the PVDF-based dielectrics with various double core-shell filler (PDA-SiO 2 @BT NPs or PDA-SiO 2 @BT NFs) contents were also investigated. Compared with the particles, appropriate introduction of the PDA-SiO 2 @BT NFs could more preferentially improve the energy storage characteristics. It was found that 1.0 vol.% PDA-SiO 2 @BT NFs/PVDF exhibited a high energy storage density of 14.7 J/cm 3 with an efficiency of 68%. This research provides a promising avenue for enhancing the energy storage capability of PVDF-based nanocomposite dielectrics. INDEX TERMS Nanofiber, core-shell structure, polydopamine, silica, poly(vinylidene fluoride), energy storage density.

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“…Integration of embedded passive components into printed circuit boards generally results in enhanced electrical performance of the device, improved reliability, reduction of device size, faster switching speed, and lower production costs [29][30][31][32]. Two-phase composites: metal-polymer [33][34][35][36][37] and ceramic-polymer have been extensively studied [38][39][40][41][42] for application in coupling or by-pass capacitor technology, where emphasis has been placed on achievement of high effective dielectric constants via analysis of percolation theory and mixing rules. Piezo-polymer composites are also promising because of their excellent tailored properties [3,30].…”

Section: Piezoelectric Compositesmentioning

confidence: 99%

Polarization Parameters and Scaling Matter—How Processing Environment and Shape Factor Influence Electroactive Nanocomposite Characteristics

Banerjee

Cook-Chennault

2020

J. Compos. Sci.

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Polymeric-ceramic smart nanocomposite piezoelectric and dielectric materials are of interest due to their superior mechanical flexibility and ability to leverage characteristics of constituent materials. A great deal of work has centered on development of processes for manufacturing 0–3 continuity composite piezoelectric materials that vary in scale ranging from bulk, thick and thin film to nanostructured films. Less is known about how material scaling effects the effectiveness of polarization and electromechanical properties. This study elucidates how polarization parameters: contact versus corona, temperature and electrical voltage field influence the piezoelectric and dielectric properties of samples as a function of their shape factor, i.e., bulk versus thick film. Bulk and thick film samples were prepared via sol gel/cast-mold and sol gel/spin coat deposition, for fabrication of bulk and thick films, respectively. It was found that corona polarization was more effective for both bulk and thick film processes and that polarization temperature produced higher normalized changes in samples. Although higher electric field voltages could be achieved with thicker samples, film samples responded the most to coupled increases in temperature and electrical voltage than bulk samples.

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High energy density with ultrahigh discharging efficiency obtained in ceramic-polymer nanocomposites using a non-ferroelectric polar polymer as matrix

Cited by 76 publications

References 76 publications

Improved Energy Storage Performance of All-Organic Composite Dielectric via Constructing Sandwich Structure

Improved Energy Storage Performance of All-Organic Composite Dielectric via Constructing Sandwich Structure

Enhanced Energy Storage Characteristics in PVDF-Based Nanodielectrics With Core-Shell Structured and Optimized Shape Fillers

Polarization Parameters and Scaling Matter—How Processing Environment and Shape Factor Influence Electroactive Nanocomposite Characteristics

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