Synergy of micro-/mesoscopic interfaces in multilayered polymer nanocomposites induces ultrahigh energy density for capacitive energy storage

Jiang, Jianyong; Shen, Zhonghui; Qian, Jianfeng; Dan, Zhenkang; Guo, Mengfan; He, Yue; Lin, Yuanhua; Nan, Ce Wen; Chen, Lei; Shen, Yang

doi:10.1016/j.nanoen.2019.05.038

Cited by 163 publications

(129 citation statements)

References 30 publications

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“…However, most of these materials are manufactured as composites with polymers, such as PVA or PVDF, to increase the value of dielectric constant and decrease the value of dielectric loss [ 24 ]. High-κ dielectric polymer composites have been reported to be successful in various applications [ 25 , 26 , 27 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Nanocrystalline Antiferromagnetic High-κ Dielectric Sr2NiMO6 (M = Te, W) with Double Perovskite Structure Type

et al. 2020

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Double perovskites have been extensively studied in materials chemistry due to their excellent properties and novel features attributed to the coexistence of ferro/ferri/antiferro-magnetic ground state and semiconductor band gap within the same material. Double perovskites with Sr2NiMO6 (M = Te, W) structure type have been synthesized using simple, non-toxic and costless aqueous citrate sol-gel route. The reaction yielded phase-pure nanocrystalline powders of two compounds: Sr2NiWO6 (SNWO) and Sr2NiTeO6 (SNTO). According to the Rietveld refinement of powder X-ray diffraction data at room temperature, Sr2NiWO6 is tetragonal (I4/m) and Sr2NiTeO6 is monoclinic (C12/m1), with average crystallite sizes of 49 and 77 nm, respectively. Structural studies have been additionally performed by Raman spectroscopy revealing optical phonons typical for vibrations of Te6+/W6+O6 octahedra. Both SNTO and SNWO possess high values of dielectric constants (341 and 308, respectively) with low dielectric loss (0.06 for SNWO) at a frequency of 1 kHz. These values decrease exponentially with the increase of frequency to 1000 kHz, with the dielectric constant being around 260 for both compounds and dielectric loss being 0.01 for SNWO and 0.04 for SNTO. The Nyquist plot for both samples confirms the non-Debye type of relaxation behavior and the dominance of shorter-range movement of charge carriers. Magnetic studies of both compounds revealed antiferromagnetic behavior, with Néel temperature (TN) being 57 K for SNWO and 35 K for SNTO.

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Section: Introductionmentioning

confidence: 99%

Nanocrystalline Antiferromagnetic High-κ Dielectric Sr2NiMO6 (M = Te, W) with Double Perovskite Structure Type

et al. 2020

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“…For the TSDC spectroscopy of pure P(VDF-HFP), three discharge peaks could be identied at around À45 C, 60 C, and 90-100 C. Among them, the peak at À45 C (T g,P(VDF-HFP) ) corresponds to the depolarization of the polarized amorphous P(VDF-HFP) via devitrication at T g (glass transition temperature), the peak of 60 C (P e ) corresponds to the depolarization of the injected charges from electrodes (from Schottky or thermionic emission), and the discharge peak at around 90-100 C (P ion ) can be assigned to the depolarization of ions in the P(VDF-HFP) lm. 48 The difference in the peak position between P e and P ion is because the ions need to be polarized at a higher poling temperature since their mobility is lower than the electron mobility. Conversely, for PMMA under the same test conditions, there is almost no corresponding depolarization peak at the temperature range of À100-100 C, which also proves that PMMA has excellent insulation performance.…”

Section: Resultsmentioning

confidence: 99%

An alternating multilayer architecture boosts ultrahigh energy density and high discharge efficiency in polymer composites

et al. 2020

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“…10b. Compared to the organic-inorganic composite films, the organic composite films can improve energy storage density and efficiency of the film more efficiently and are feasible in practical applications for roll-to-toll device fabrication [41,42]. In all, by controlling the molecular weight and addition ratio of ArPTU properly, high-performance organic dielectrics based on PVDF-TrFE-CFE/ArPTU with high energy density, high breakdown field strength, low dielectric loss, and higher charge-discharge efficiency can be constructed.…”

Section: Dielectric Properties Of Pvdf-trfe-cfe/arptu Composite Filmsmentioning

confidence: 99%

All Polymer Dielectric Films for Achieving High Energy Density Film Capacitors by Blending Poly(Vinylidene Fluoride-Trifluoroethylene-Chlorofluoroethylene) with Aromatic Polythiourea

Shi

Yang

et al. 2020

Nanoscale Res Lett

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Construct dielectric films with high energy density and efficiency are the key factor to fabricate high-performance dielectric film capacitors. In this paper, an all organic composite film was constructed based on high dielectric polymer and linear dielectric polymer. After the optimized polycondensation reaction of a linear dielectric polymer aromatic polythiourea (ArPTU), the proper molecular weight ArPTU was obtained, which was introduced into poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (PVDF-TrFE-CFE) terpolymer for a composite dielectrics. The results indicate that the addition of ArPTU molecules reduces the dielectric loss and improves the breakdown field strength of the PVDF-TrFE-CFE effectively. For the PVDF-TrFE-CFE/ArPTU (90/10) composite film, the maximum energy density about 22.06 J/cm 3 at 407.57 MV/m was achieved, and high discharge efficiency about 72% was presented. This composite material can be casted on flexible substrate easily, and PVDF-TrFE-CFE/ArPTU organic composite films having high energy density, high breakdown field strength, low dielectric loss, and higher discharge efficiency are obtained. This is an unreported exploration about high energy density organic dielectric films based on PVDF-TrFE-CFE matrix and linear polymer dielectrics, and the findings of this research can provide a simple and scalable method for producing flexible high energy density materials for energy storage devices.

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Synergy of micro-/mesoscopic interfaces in multilayered polymer nanocomposites induces ultrahigh energy density for capacitive energy storage

Cited by 163 publications

References 30 publications

Nanocrystalline Antiferromagnetic High-κ Dielectric Sr2NiMO6 (M = Te, W) with Double Perovskite Structure Type

Nanocrystalline Antiferromagnetic High-κ Dielectric Sr2NiMO6 (M = Te, W) with Double Perovskite Structure Type

An alternating multilayer architecture boosts ultrahigh energy density and high discharge efficiency in polymer composites

All Polymer Dielectric Films for Achieving High Energy Density Film Capacitors by Blending Poly(Vinylidene Fluoride-Trifluoroethylene-Chlorofluoroethylene) with Aromatic Polythiourea

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