Polymer Nanocomposites: New Advanced Dielectric Materials for Energy Storage Applications

Thakur, Vijay Kumar; Kessler, Michael R.

doi:10.1002/9781118904923.ch5

Cited by 26 publications

(18 citation statements)

References 127 publications

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“…Consequently, a considerable amount of research on novel dielectric polymers has emerged over the last years in an effort to increase the capacitive energy storage ability and reliability. Materials with improved breakdown strength and permittivity while maintaining acceptable dielectric losses are highly aspired for, and while many different approaches to achieve such properties exist [2,[14][15][16], dielectric polymer nanocomposites [17][18][19] have received an increasing amount of attention recently.…”

Section: Introductionmentioning

confidence: 99%

Large-area dielectric breakdown performance of polymer films – Part II: Interdependence of filler content, processing and breakdown performance in polypropylene-silica nanocomposites

Rytöluoto

Lahti

Karttunen

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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In this study, large-area dielectric breakdown performances of various bi-axially oriented polypropylene (BOPP)-silica nanocomposite films are studied by utilizing the self-healing multi-breakdown method presented in the Part I of this publication. In particular, the effects of silica filler content, pre-mixing method, co-stabilizer content and film processing on the large-area breakdown performance are analyzed. Nanostructural and film cross-sectional analyses are correlated to the breakdown responses. The optimum silica filler content is found to reside at the low fill fraction level (~1 wt-%) and automatic pre-mixing of the raw materials and the optimization of the orientation temperature are found to be preferable. The co-stabilizer Irgafos 168 is found to have a significant effect on the breakdown distribution homogeneity of the reference BOPP films. The breakdown response of the silica nanocomposites is found to be not only dependent on the active measurement area but also on the voltage ramp rate, indicating that the silica nanocomposites exhibit altered internal charge behavior under DC electric field. The area-and ramp-rate-dependence results exemplify the importance of careful breakdown strength evaluation of dielectric polymer nanocomposites. Above all, the results emphasize the fact that a thorough understanding and the optimization of the film processing parameters are crucial for achieving improved breakdown response in dielectric polymer nanocomposite films.

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Section: Introductionmentioning

confidence: 99%

Large-area dielectric breakdown performance of polymer films – Part II: Interdependence of filler content, processing and breakdown performance in polypropylene-silica nanocomposites

Rytöluoto

Lahti

Karttunen

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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“…Here, ε e [see (1)] and ε i [see (2)] are permittivities of matrix/host and filler materials, and FF is the volume fraction of the fillers to the overall volume of the composite.…”

Section: Methodsmentioning

confidence: 99%

“…A capacitor's energy storage capacity depends on its size as well as the dielectric permittivity of the spacer/filling material used [1][2][3][4][5]. In recent years, due to the advancements in fabrication technologies, the size of electronic systems and their individual components have significantly shrunk.…”

Section: Introductionmentioning

confidence: 99%

Metallic nanoparticles in dielectrics: A comparative study

Agambayev

Farhat

Bağcı

et al. 2017

2017 IEEE International Symposium on Antennas and Propagation &Amp; USNC/URSI National Radio Science Meeting

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“…Polymer dielectrics (PD) with higher energy density and lower loss tangent (tan δ) with higher breakdown field strength are the emerging materials of future for electrostatic energy storage applications due to their flexibility, non-toxicity, bio-compatibility, low cost, higher visco-elastic properties, etc. [1][2][3][4][5][6][7][8][9][10][11][12]. For this application, the maximum stored energy density is an important parameter, and for a linear dielectric, the maximum stored energy per unit volume is U = 1 2 K 0 E 2 max ,where K is the relative dielectric constant and E max is the maximum electric field, which can be applied to the material (proportional to the breakdown field of the material) [4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effective enhancement of dielectric properties in cold-pressed polyvinyledene fluoride/barium titanate nanocomposites

2019

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The dielectric behaviour of a polymer/ceramic composite (PCC) based on ferroelectric polymer [polyvinylidene fluoride (PVDF)] and nano-barium titanate (n-BaTiO 3), prepared under the novel cold pressing method, was investigated. Large enhancement of effective dielectric constant (ɛ eff ~ 450) with lower loss tangent (tan δ ~ 0.9) at 50 Hz was observed for the PCC with 0.60 as the volume fraction of n-BaTiO 3 into the PVDF matrix. The enhancement of ɛ eff is attributed to the large interfacial polarisation arising due to the charge storage at the interfaces of the spherulites of PVDF and at the polymer/filler interfaces of PCC. The dielectric results have been explained on the basis of sum effect with the help of the standard Yamada model at 1 kHz, while the low-frequency dielectric behaviour has been explained qualitatively as a combination of both interfacial polarisation at the interfaces of the spherulites and the sum effect of the Yamada model. The achieved lower tan δ for the PCC as compared to the polymer/metal composites (PMC) is attributed to the highly insulating nature of PVDF and semiconducting n-BaTiO 3. The thermal stability of the composites is also maintained due to the higher melting temperature (170 °C) of PVDF. The cold-pressed PCC based on PVDF will act as better polymer dielectric for electrical energy storage applications as compared to the reported cold-pressed PMC and the cold pressing may be an effective method of preparation (since the unnecessary introduction of thermal disorder is avoided in this method) in developing polymer dielectrics.

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Polymer Nanocomposites: New Advanced Dielectric Materials for Energy Storage Applications

Cited by 26 publications

References 127 publications

Large-area dielectric breakdown performance of polymer films – Part II: Interdependence of filler content, processing and breakdown performance in polypropylene-silica nanocomposites

Large-area dielectric breakdown performance of polymer films – Part II: Interdependence of filler content, processing and breakdown performance in polypropylene-silica nanocomposites

Metallic nanoparticles in dielectrics: A comparative study

Effective enhancement of dielectric properties in cold-pressed polyvinyledene fluoride/barium titanate nanocomposites

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