Adjusting the energy gap and interface effect of titania nanosheets synergistically enhances the energy storage performance of PVDF-based composites

Zhu, Congcong; Liu, Xiaoxu; Feng, Yu; Li, Jialong; Li, Yanpeng; Zhao, He; Dong, Yue; Yin, Jinghua

doi:10.1039/d1tc05125c

Cited by 23 publications

(25 citation statements)

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“…The average lateral dimension (d) of BN@PDA as obtained was around 0.5-3 µm and the d of the STNSs was about 0.9-2.8 µm. The thickness of BN@PDA (Figure S3) was about 30-120 nm, and the thickness of the STNSs was about 3 nm, as shown in our previous work [24]. The EDS of BN@PDA is shown in Figure S4, and the presence of O, C, and N elements indicates that the PDA was successfully coated on the BN surface.…”

Section: Characterization Of Bn@pda and Stnsssupporting

confidence: 75%

“…Pure PVDF, PVDF/BN@PDA, and PVDF/BN@PDA−STNSs composites were prepared via simple physical blending and hot-press method. The 0.5 wt% PVDF/STNSs showed an excellent energy storage performance in our previous work [24]. The appropriate amount of BN@PDA and 0.5 wt% STNSs were sequentially dissolved in 7 mL DMF solvent to form a suspension.…”

Section: Preparation Of Pvdf/bn@pda−stnss Nanocompositesmentioning

confidence: 96%

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Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets

et al. 2022

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With the rapid development of modern electrical and electronic applications, the demand for high-performance film capacitors is becoming increasingly urgent. The energy density of a capacitor is dependent on permittivity and breakdown strength. However, the development of polymer-based composites with both high permittivity (εr) and breakdown strength (Eb) remains a huge challenge. In this work, a strategy of doping synergistic dual-fillers with complementary functionalities into polymer is demonstrated, by which high εr and Eb are obtained simultaneously. Small-sized titania nanosheets (STNSs) with high εr and high-insulating boron nitride sheets coated with polydopamine on the surface (BN@PDA) were introduced into poly(vinylidene fluoride) (PVDF) to prepare a ternary composite. Remarkably, a PVDF-based composite with 1 wt% BN@PDA and 0.5 wt% STNSs (1 wt% PVDF/BN@PDA−STNSs) shows an excellent energy storage performance, including a high εr of ~13.9 at 1 Hz, a superior Eb of ~440 kV/mm, and a high discharged energy density Ue of ~12.1 J/cm3. Moreover, the simulation results confirm that BN@PDA sheets improve breakdown strength and STNSs boost polarization, which is consistent with the experimental results. This contribution provides a new design paradigm for energy storage dielectrics.

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Section: Characterization Of Bn@pda and Stnsssupporting

confidence: 75%

Section: Preparation Of Pvdf/bn@pda−stnss Nanocompositesmentioning

confidence: 96%

Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets

et al. 2022

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confidence: 99%

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Ceramic‐Polymer Nanocomposites Design for Energy Storage Capacitor Applications

Liang

Yang

et al. 2022

Adv Materials Inter

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Given the remarkable advantages of high power density, fast charge–discharge speed, good stability, and low cost, the dielectric capacitors have sparked tremendous research interest in recent years for their unique applications in electrical systems and modern electronics. As for satisfying the future demands of the miniaturization and integration of the electrical devices, novel dielectric material with high energy storage density should be developed urgently. Importantly, ceramic‐polymer nanocomposites, which combine the high permittivity of the ceramic fillers and the excellent breakdown strength of the polymer matrix, are regarded as promising candidates. In this review, the various designs of the emerging nanocomposites are introduced from three aspects. First, the diverse design of the nanofillers, including tailoring the size, engineering the dimension, and selecting the species is focused. In addition, the design of the interfaces between the two phases by organic surface coating and inorganic surface coating is demonstrated. Furthermore, the spatial structure design of the nanocomposites, such as sandwich structure, gradient structure, and array structure, is presented as well. Finally, the bottlenecks along with opportunities of this booming field at present are concluded and outlined.

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“…The charge-discharge efficiency and discharged energy density of the PVDF-390 film are compared with those of pristine PVDF films in other recently published works [41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56] in Fig. 13, showing that the PVDF film irradiated with 390 kGy outperforms those other pristine PVDF films.…”

Section: Energy Storage Performancesmentioning

confidence: 99%

Optimizing nanostructures to achieve enhanced breakdown strength and improved energy storage performances in dipolar polymers

Liu

et al. 2022

Nanoscale

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Adjusting the energy gap and interface effect of titania nanosheets synergistically enhances the energy storage performance of PVDF-based composites

Abstract: Polymeric dielectric materials have recently attracted much attention due to their very high potential for use as advanced energy storage capacitors. However, it is still challenging to improve the inherent...

Cited by 23 publications

References 49 publications

Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets

Enhanced Energy Storage Performance of PVDF-Based Composites Using BN@PDA Sheets and Titania Nanosheets

Ceramic‐Polymer Nanocomposites Design for Energy Storage Capacitor Applications

Optimizing nanostructures to achieve enhanced breakdown strength and improved energy storage performances in dipolar polymers

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