All-organic sandwich-structured BOPP/PVDF/BOPP dielectric films with significantly improved energy density and charge–discharge efficiency

Gong, Yi; Xu, Wei; Chen, Dong; Ma, Yuhong; Zhao, Changwen; Yang, Wantai

doi:10.1016/j.cej.2023.141525

Cited by 21 publications

(11 citation statements)

References 54 publications

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“…PVDF and its copolymers have the highest dielectric constants among common polymers, and it is blended with CPP to enhance the polarization of the composite film. In our previous work, the optimal weight ratio of PVDF and CPP in the middle layer has been confirmed to be 1:1, which can ensure the good adhesion with the outside BOPP films and get the maximum dielectric constant of the sandwich film . The prepared films have three distinct layers, and the layers are adhered with each other with a robust interface.…”

Section: Resultsmentioning

confidence: 91%

“…Each sample was measured 12 times, and the highest and lowest values of E were discarded, so n is 10 in this work. Weibull distribution was adopted to process the electric breakdown strength. , The high electric field D – E loops of the composites were measured at 10 Hz by using a TF analyzer 2000 (aixACCT, Aachen, Germany), and gold electrodes with a diameter of 2 mm were sprayed on both sides before the measurement.…”

Section: Methodsmentioning

confidence: 99%

“…In our previous work, the BOPP-based sandwich-structured composite films have shown advantages of a heterostructure to enhance the energy storage properties of BOPP. , The dielectric constant of chlorinated polypropylene (CPP) is higher than that of BOPP, and it has good adhesion to BOPP. Clemens et al found that CPP integrated with isotactic PP in the heating process because the unit crystal size of CPP was similar to that of isotactic PP, so CPP is a good binder of BOPP.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of Energy Density in the BOPP-Based Sandwich-Structured Film by the Synergistic Effect of BaTiO₃@Polyaniline Hybrid Dielectric Fillers

Gong,

Chen,

et al. 2023

ACS Appl. Electron. Mater.

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A series of polyaniline-coated BaTiO3 (BaTiO3@PANI) hybrid dielectric fillers were prepared through the in situ oxidative polymerization of aniline. The morphology of the hybrid fillers can be controlled by the ratio of aniline and BaTiO3 particles. Mulberry-like and core–shell BaTiO3@PANI composite particles are prepared successfully. The two kinds of dielectric fillers were introduced into the poly(vinylidene fluoride) (PVDF) matrix separately or simultaneously. The dielectric loss can be suppressed by the synergetic effect of these two hybrid fillers while enhancing the dielectric constant at the same time. The finite element simulation results showed that the surface morphology of adjacent hybrid fillers played an important role in the dielectric performance. The fillers were introduced in the biaxially oriented polypropylene (BOPP)-based sandwich-structured film; specifically, the outer layer was BOPP and the middle layer was the composites consisting of chlorinated polypropylene (CPP)/PVDF blends and the hybrid fillers. The energy storage density of the sandwich-structured film was improved significantly compared to that of the BOPP film. The highest discharge energy density was 7.31 J/cm3 at 450 MV/m, and the charge–discharge efficiency was 77.3% with 30 wt % hybrid fillers in the middle layer.

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Section: Resultsmentioning

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhancement of Energy Density in the BOPP-Based Sandwich-Structured Film by the Synergistic Effect of BaTiO₃@Polyaniline Hybrid Dielectric Fillers

Gong,

Chen,

et al. 2023

ACS Appl. Electron. Mater.

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“…Polymer dielectrics have garnered substantial attention in the field of dielectric capacitors due to their remarkable features of high breakdown strength, low dielectric loss, flexibility, and processability. − In recent decades, commercially available capacitors have extensively utilized synthetic polymer dielectrics derived from petroleum sources, including biaxially oriented polypropylene, , poly(ethylene terephthalate) , poly(ether imide), − poly(methyl methacrylate), poly(vinylidene fluoride), − and polycarbonate. , Nonetheless, it is imperative to note that these petroleum-based synthetic polymers are not only nonbiodegradable but also nonrenewable, which adversely impacts the environment in the form of waste polymer dielectric films with the ever-growing demand for electronic devices and electrical power systems. Hence, there is a pressing need for the development of environmentally friendly dielectric materials with comparable dielectric properties. , …”

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confidence: 99%

Enhanced Dielectric Properties of All-Cellulose Composite Film via Modulating Hydroxymethyl Conformation and Hydrogen Bonding Network

Shi

Lan

et al. 2023

ACS Macro Lett.

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Cellulose-based dielectrics with attractive dielectric performance are promising candidates to develop eco-friendly electrostatic energy storage devices. Herein, all-cellulose composite films with superior dielectric constant were fabricated by manipulating the dissolution temperature of native cellulose, where we revealed the relationship among the hierarchical microstructure of the crystalline structure, the hydrogen bonding network, the relaxation behavior at a molecular level, and the dielectric performance of the cellulose film. The coexistence of cellulose I and cellulose II led to a weakened hydrogen bonding network and unstable C6 conformations. The increased mobility of cellulose chains in the cellulose I-amorphous interphase enhanced the dielectric relaxation strength of side groups and localized main chains. As a result, the as-prepared all-cellulose composite films exhibited a fascinating dielectric constant of as high as 13.9 at 1000 Hz. This work proposed here provides a significant step toward fundamentally understanding the dielectric relaxation of cellulose, thus developing high-performance and eco-friendly cellulose-based film capacitors.

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“…[8][9][10] For example, the energy storage density of commercial biaxially oriented polypropylene is no more than 3 J/cm 3 due to its low ε r (about 2.2). 11 Therefore, the development of polymer-based dielectrics with high ε r is essential for the next generation of the film capacitors.…”

mentioning

confidence: 99%

Constructing high‐polarization silica for polyimide‐based nanocomposites with enhanced dielectric permittivity and mechanical performances: Molecular dynamics simulations

Wang

Yang

Lin

et al. 2023

J of Applied Polymer Sci

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In this work, the silane coupling agents with 4-carboxyphenyl ( PhCOOH), amino, phenyl, 4-aminophenyl and 4-phenylmethylketone were employed to modify the interfaces of the polyimide/SiO 2 (PIS) nanocomposites, and the effects of the interfacial structures on the dielectric and the mechanical properties for the PI-based composites were predicted by molecular dynamics simulation. The results showed that the interface structure with PhCOOH simultaneously elevated the static dielectric permittivity (ε s ) and Young modulus of the PI-based composites. Due to enhanced intrinsic polarization of the SiO 2 particles and the interface polarization in the composites, the ε s of PIS-PhCOOH composites (6.66) was 28% higher than that of PIS (5.21). Young modulus of PIS-PhCOOH (5.09 GPa) was higher than that of PIS (3.25 GPa), which was attributed to the increase of the number of hydrogen bonds and non-bond interaction. In addition, the length of PhCOOH was found to be larger than the thickness of excluded volume region, showing that part of PhCOOH could be embedded into the gaps among PI chains and the interfacial load transfer efficiency was reinforced. These results provided an understanding of the atomic-scale interfacial structures, which was beneficial for the design and preparation of the nanocomposites with superior dielectric and mechanical performances.

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All-organic sandwich-structured BOPP/PVDF/BOPP dielectric films with significantly improved energy density and charge–discharge efficiency

Cited by 21 publications

References 54 publications

Enhancement of Energy Density in the BOPP-Based Sandwich-Structured Film by the Synergistic Effect of BaTiO₃@Polyaniline Hybrid Dielectric Fillers

Enhancement of Energy Density in the BOPP-Based Sandwich-Structured Film by the Synergistic Effect of BaTiO₃@Polyaniline Hybrid Dielectric Fillers

Enhanced Dielectric Properties of All-Cellulose Composite Film via Modulating Hydroxymethyl Conformation and Hydrogen Bonding Network

Constructing high‐polarization silica for polyimide‐based nanocomposites with enhanced dielectric permittivity and mechanical performances: Molecular dynamics simulations

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All-organic sandwich-structured BOPP/PVDF/BOPP dielectric films with significantly improved energy density and charge–discharge efficiency

Cited by 21 publications

References 54 publications

Enhancement of Energy Density in the BOPP-Based Sandwich-Structured Film by the Synergistic Effect of BaTiO3@Polyaniline Hybrid Dielectric Fillers

Enhancement of Energy Density in the BOPP-Based Sandwich-Structured Film by the Synergistic Effect of BaTiO3@Polyaniline Hybrid Dielectric Fillers

Enhanced Dielectric Properties of All-Cellulose Composite Film via Modulating Hydroxymethyl Conformation and Hydrogen Bonding Network

Constructing high‐polarization silica for polyimide‐based nanocomposites with enhanced dielectric permittivity and mechanical performances: Molecular dynamics simulations

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Enhancement of Energy Density in the BOPP-Based Sandwich-Structured Film by the Synergistic Effect of BaTiO₃@Polyaniline Hybrid Dielectric Fillers

Enhancement of Energy Density in the BOPP-Based Sandwich-Structured Film by the Synergistic Effect of BaTiO₃@Polyaniline Hybrid Dielectric Fillers