Modulation of individual-layer properties results in excellent discharged energy density of sandwich-structured composite films

Yang, Ligong; Hou, Yafei; Qian, Jiasheng; Wei, Shixin; Du, Peng; Luo, Laihui; Li, Weiping

doi:10.1007/s10854-020-03302-0

Cited by 6 publications

(3 citation statements)

References 75 publications

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“…Apart from adding fillers with high dielectric constant to the polymer matrix, changing composite structures is also an effective strategy for promoting energy storage performance. Composite with sandwich structure has attracted much attention owing to the ability to improve the dielectric constant and high breakdown strength [8,16,[33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49]. For instance, the 'hard layer' (high E b ) of sandwich-structured composite embeds into two 'soft layers' with high dielectric constants [14].…”

Section: Introductionmentioning

confidence: 99%

Improvement of dielectric properties and energy storage performance in sandwich-structured P(VDF-CTFE) composites with low content of GO nanosheets

Cheng¹,

Liu²,

Wang³

et al. 2021

Nanotechnology

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Polymer-based dielectric capacitors play a notable part in the practical application of energy storage devices. Graphene oxide (GO) nanosheets can improve the dielectric properties of polymer-based composites. However, the breakdown strength will greatly reduce with the increase of GO content. Hence, the construction of sandwich structure can enhance the breakdown strength without reducing the dielectric constant. Herein, single-layered and sandwich-structured poly(vinylidene fluoride-cochlorotrifluoroethylene) (P(VDF-CTFE)) nanocomposites with low content of GO nanosheets (<1.0 wt%) are prepared via employing a straightforward casting method. Compared with the single-layered composites and pure P(VDF-CTFE), the sandwich-structured composites exhibit comprehensively better performance compared. The sandwich-structured composite with 0.4 wt% GO nanosheets show an excellent dielectric constant of 13.6 (at 1 kHz) and an outstanding discharged energy density of 8.25 J cm −3 at 3400 kV cm −1 . These results demonstrate that the growth of the dielectric properties is owing to 2D GO nanosheets and the enhancement of breakdown strength due to the sandwich structure. The results from finite element simulation provide theoretical support for the design of high energy density composites.

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Section: Introductionmentioning

confidence: 99%

Improvement of dielectric properties and energy storage performance in sandwich-structured P(VDF-CTFE) composites with low content of GO nanosheets

Cheng¹,

Liu²,

Wang³

et al. 2021

Nanotechnology

Self Cite

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“…The voltage that can be applied to the polymer capacitor is limited by the voltage of the polymer breakdown. Increasing the polarity of a polymeric material by blending or adding fillers is usually accompanied by a decrease in the dielectric strength of such a material relative to the pure polymer, and this topic is common in studies dealing with the storage of electricity in polymeric materials [8,9]. Linear polymers show lower dielectric permittivity compared to ceramics, but due to the possibility of applying very large electric fields, polymer capacitors generally show higher energy densities compared to ceramic capacitors [7].…”

Section: Introductionmentioning

confidence: 99%

“…Linear polymers show lower dielectric permittivity compared to ceramics, but due to the possibility of applying very large electric fields, polymer capacitors generally show higher energy densities compared to ceramic capacitors [7]. The energy densities of polymer capacitors range from 1.1 J/cm 3 (∼ 0.05 Wh/kg) -polypropylene (PP) capacitor to 11 J/cm 3 -polyvinylidene fluoride (PVDF) capacitor [5,[7][8][9]. Polymer composites based on fluoropolymers and ceramic fillers have so far shown the highest energy densities, slightly exceeding the value of 30 J/cm 3 [7].…”

Section: Introductionmentioning

confidence: 99%

Perspectives of Electricity Storage in Polymer Capacitors

Dudić

2021

jrups

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The price and environmental aspects of electricity storage significantly affect the application of green technologies. The electrochemical batteries are currently the best choice for storing electricity for most industrial needs and products. Polymer capacitors show very low energy density compared to conventional batteries and therefore cannot be widely used for electricity disposal. At the same time, all other features of polymer capacitors that characterize battery systems are ideal. After a brief comparison of the basic properties of electrochemical and physical batteries, this paper presents the influence of electron trapping on the energy density of a polyethylene capacitor. The presented results indicate that the phenomenon of electron trapping in polymers can increase the energy deposit of polymer capacitors.

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Greatly improved energy storage density of SrO2–BaO2–Nb2O5–SiO2–Al2O3–B2O3 glass ceramics by various amount CeO2 doping

Liu,

Xin,

Wang

et al. 2024

Ceramics International

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Modulation of individual-layer properties results in excellent discharged energy density of sandwich-structured composite films

Cited by 6 publications

References 75 publications

Improvement of dielectric properties and energy storage performance in sandwich-structured P(VDF-CTFE) composites with low content of GO nanosheets

Improvement of dielectric properties and energy storage performance in sandwich-structured P(VDF-CTFE) composites with low content of GO nanosheets

Perspectives of Electricity Storage in Polymer Capacitors

Greatly improved energy storage density of SrO2–BaO2–Nb2O5–SiO2–Al2O3–B2O3 glass ceramics by various amount CeO2 doping

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