Significantly enhancing energy storage performances of flexible dielectric film by introducing poly(1,4-anthraquinone)

Zhang, Yang; Feng, Rui; Chen, Zhuo; Zhao, Tingting; Ju, Yanyun; Yan, Shengliao; Song, Shaokun; Zhao, Guanghui; Dong, Lijie

doi:10.1016/j.eurpolymj.2021.110486

Cited by 8 publications

(8 citation statements)

References 46 publications

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“…[40][41] Meanwhile, the Young's modulus of the composites significantly increases with the addition of f-PPTA, e.g., 1462 and 1854 MPa of the composite films with 1 wt% and 2 wt% f-PPTA, respectively, than that (1033 MPa) of PVDF (Figure S5, Supporting Information), which can be attributed to the favorable interfacial interaction between PVDF and f-PPTA. [42] The enhanced mechanical strength enables the dielectric polymers to withstand high columb attractive forces between the opposite electrodes at high fields, therefore also contributing to such high E b observed in the composite extruded films.…”

Section: Resultsmentioning

confidence: 99%

“…We further compared the energy storage performance between this work and other commercial polymers or extruded polymers reported in literature, as shown in Figure 4. [29][30][31][32][42][43][44][45][46] Impressively, the composite films with 2 wt% f-PPTA in our work represents, to our best knowledge, the best extruded dielectric film with highest U e , which is 6.9 times of the state-of-the-art commercial BOPP (U e = 3 J cm −3 ) and 1.2 times of the PC/PVDF multilayer film (U e = 17 J cm −3 ), demonstrating great promises for highenergy-density dielectric capacitor applications.…”

Section: Resultsmentioning

confidence: 99%

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High‐Energy‐Density All‐Organic Dielectric Film via a Continuous Preparation Processing

Zhang

et al. 2023

Adv Funct Materials

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Dielectric polymers with high power density and breakdown strength (Eb) are indispensably used in electrostatic energy‐storing systems and devices. However, the discharged energy density (Ue) of dielectric polymers is severely limited due to the relatively low dielectric constant (K). Although current polymer composites improve K, this approach usually faces challenges in enhancing Ue due to the trade‐off relation between K and Eb and difficulties in scalable production of dielectric films. Here, a fully melt‐extrudable, meter‐scale, and high‐Ue ferroelectric polymer‐based all organic composite film comprising a poly(p‐phenylene terephthalamide)‐based fluxible polymer (denoted as f‐PPTA) is reported. The polymer composite with only 2 wt% of f‐PPTA presents a productivity of 12 m2 h−1 and an ultrahigh Ue of 20.7 J cm−3, which outperforms other extruded dielectric polymers reported in the literatures. Such enhancements of dielectric and capacitive properties have been comprehensively investigated and attributed to the crystallization behavior modulations and conformation changes induced by f‐PPTA. As a demonstration of real applications, the dielectric capacitors established based on the extruded films enable tens of times higher efficacy on powering electronic devices than biaxially oriented polypropylene capacitors, in addition to long‐term cyclic stability. This study opens up new avenue for the design and fabrication of high‐Ue polymer dielectrics that are totally compatible with industrial production.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

High‐Energy‐Density All‐Organic Dielectric Film via a Continuous Preparation Processing

Zhang

et al. 2023

Adv Funct Materials

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“…[45] For the random copolymers, in the case of a low MHT structure unit ratio, P(MMA-co-MHT)1 not only inherits the advantages of PMMA but also possesses the electron trap caused by the electrophilic MHT structure unit (see Figure 10b). [27][28][29][30][31][32] Therefore, the E b of P (MMA-co-MHT)1 bearing 1 mol% MHT is 125% higher than that of PMMA. Thereafter, the E b of random polymers decreased when MHT increased to 3 mol% and more.…”

Section: Breakdown Mechanism Of Polymer Filmsmentioning

confidence: 99%

“…In the PMMA/PMHT blends (see Figure 10d), the E b of PMMA/PMHT (99/1) is improved at a low PMHT molar content because the compatibility between PMHT and PMMA (see Figure 7g) is good and the semiconductive polymer PMHT can act as an electron trap to capture electrons. [27][28][29][30][31][32] However, when the mole ratio of MHT continues to increase, the E b of PMMA/PMHT composite film decreases rapidly, which is caused by serious electronic conduction of the excited charge carriers, microphase separation, filler aggregation, and holes (see Figure 7h-j).…”

Section: Breakdown Mechanism Of Polymer Filmsmentioning

confidence: 99%

“…[26] Recently, semi-conductive organic fillers as electron trap have been proven to capture the injected electrons through strong electrostatic attraction, thus improving the E b of the polymer dielectric. [27][28][29][30][31][32] For example, Dong et al have synthesized a series of polymer semiconductors: poly(anthraquinone sulfide) (PAQS), [27] poly(1,4anthraquinone), [29] poly(1,5-anthraquinone) (P15AQ). [32] Via solution casting method, the corresponding poly(vinylidene fluoride) (PVDF)/PAQS blended films, PVDF/poly(1,4-anthraquinone) blended films, and PVDF/P15AQ blended films were fabricated.…”

Section: Introductionmentioning

confidence: 99%

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Achieving Synergistic Improvement in Dielectric and Energy Storage Properties of All‐Organic Poly(Methyl Methacrylate)‐Based Copolymers Via Establishing Charge Traps

Luo

Yan

et al. 2023

Energy & Environ Materials

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How to achieve synergistic improvement of permittivity (εr) and breakdown strength (Eb) is a huge challenge for polymer dielectrics. Here, for the first time, the π‐conjugated comonomer (MHT) can simultaneously promote the εr and Eb of linear poly(methyl methacrylate) (PMMA) copolymers. The PMMA‐based random copolymer films (P(MMA‐co‐MHT)), block copolymer films (PMMA‐b‐PMHT), and PMMA‐based blend films were prepared to investigate the effects of sequential structure, phase separation structure, and modification method on dielectric and energy storage properties of PMMA‐based dielectric films. As a result, the random copolymer P(MMA‐co‐MHT) can achieve a maximum εr of 5.8 at 1 kHz owing to the enhanced orientation polarization and electron polarization. Because electron injection and charge transfer are limited by the strong electrostatic attraction of π‐conjugated benzophenanthrene group analyzed by the density functional theory (DFT), the discharge energy density value of P(MMA‐co‐PMHT) containing 1 mol% MHT units with the efficiency of 80% reaches 15.00 J cm−3 at 872 MV m−1, which is 165% higher than that of pure PMMA. This study provides a simple and effective way to fabricate the high performance of polymer dielectrics via copolymerization with the monomer of P‐type semi‐conductive polymer.

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Enhanced breakdown strength and energy density by introducing low-loading poly(1,5-anthraquinone) into poly(vinylidene fluoride)

Zhang

Yan

Lao

et al. 2022

J Mater Sci: Mater Electron

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Significantly enhancing energy storage performances of flexible dielectric film by introducing poly(1,4-anthraquinone)

Cited by 8 publications

References 46 publications

High‐Energy‐Density All‐Organic Dielectric Film via a Continuous Preparation Processing

High‐Energy‐Density All‐Organic Dielectric Film via a Continuous Preparation Processing

Achieving Synergistic Improvement in Dielectric and Energy Storage Properties of All‐Organic Poly(Methyl Methacrylate)‐Based Copolymers Via Establishing Charge Traps

Enhanced breakdown strength and energy density by introducing low-loading poly(1,5-anthraquinone) into poly(vinylidene fluoride)

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