The future of nanodielectrics in the electrical power industry

Cao, Yang; Irwin, Patricia; Younsi, Karim

doi:10.1109/tdei.2004.1349785

Cited by 498 publications

(41 citation statements)

References 51 publications

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“…This makes such composites favorable for applications demanding high electric energy density such as energy storage devices in pulse power technology, mobile electronic devices, hybrid electric vehicles, etc. 11,12 .…”

Section: Introductionmentioning

confidence: 99%

Evolution of poled state in P(VDF-TrFE)/(Pb,Ba)(Zr,Ti)O3 composites probed by temperature dependent Piezoresponse and Kelvin Probe Force Microscopy

Shvartsman

Киселев

Solnyshkin

et al. 2018

Sci Rep

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Polarized states of polymer/inorganic inclusion P(VDF-TrFE)-(Pb,Ba)(Zr,Ti)O3 composites are studied at the nanoscale using both piezoresponse force microscopy (PFM) and Kelvin probe force microscopy (KPFM). It has been shown that inorganic inclusions can be visualized using KPFM due to a discontinuity of the surface potential and polarization at the interface between the inclusions and the polymer matrix. The temperature evolution of the PFM and KPFM signal profiles is investigated. Softening of the polymer matrix on approaching the Curie temperature limits application of the contact PFM method. However non-contact KPFM can be used to probe evolution of the polarization at the phase transition. Mechanisms of the KPFM contrast formation are discussed.

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Section: Introductionmentioning

confidence: 99%

Evolution of poled state in P(VDF-TrFE)/(Pb,Ba)(Zr,Ti)O3 composites probed by temperature dependent Piezoresponse and Kelvin Probe Force Microscopy

Shvartsman

Киселев

Solnyshkin

et al. 2018

Sci Rep

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“…The prepared nanocomposites have a large volume fraction of interfaces where interfacial polarizations are most likely to occur. Several dielectric properties of polymer nano composites have been evaluated in the past and the permittivity values in nanocomposites are reported to be lower than that of base polymers when insulating oxides are used as the fillers [12,[22][23][24][25]. In order to investigate the effect of nanoparticles on PVA matrix, CdS nanoparticles were incorporated into PVA matrix and analyzed for dielectric properties.…”

Section: Effect Of Cds Nanoparticles Addition On Different Electricalmentioning

confidence: 99%

Influence of cadmium sulfide nanoparticles on structural and electrical properties of polyvinyl alcohol films

Koteswararao¹,

Abhishek²,

Satyanarayana³

et al. 2016

Express Polym. Lett.

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Abstract. Cadmium sulfide (CdS) nanoparticles have been synthesized by hydrothermal method and dispersed in poly vinyl alcohol (PVA) matrix in varying amounts by weight. Subsequently, PVA/CdS nanocomposites have been synthesized with the objective of investigating the effect of CdS nanoparticles on structural and electrical properties of PVA films. Structural properties were analyzed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. Differential scanning calorimetry (DSC) was used to investigate thermal properties of PVA/CdS nanocomposites. Electrical properties were measured by using high frequency LCR meter and were found to be strongly dependent on frequency and nano CdS content. Dielectric constant decreased with increase in frequency and with increase in nanofiller concentration. AC conductivity and dielectric loss increased with frequency and decreased with increase in nano CdS content.

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“…Multi layered insulation with permittivity and conductivity gradients was used to increase the Apart from the external conditions, a modification of the dielectric material also improved its surface flashover properties. Recently, polymer nanodielectrics have attracted considerable interest, since they exhibit not only favorable bulk electrical properties, e.g., good dielectric response, [22][23][24] high breakdown strength, [23][24][25] and reduced space charge accumulation, 26 but also present some favorable surface properties, such as reduced surface erosion, tracking failure 27 and surface flashover. [28][29][30][31] It should be noted that incorporation of nanofillers into a polymer or its micro composites is a potential choice likely to enhance surface flashover strength.…”

Section: Introductionmentioning

confidence: 99%

Enhanced flashover strength in polyethylene nanodielectrics by secondary electron emission modification

Wang

Min

2016

AIP Advances

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This work studies the correlation between secondary electron emission (SEE) characteristics and impulse surface flashover in polyethylene nanodielectrics both theoretically and experimentally, and illustrates the enhancement of flashover voltage in low-density polyethylene (LDPE) through incorporating Al2O3 nanoparticles. SEE characteristics play key roles in surface charging and gas desorption during surface flashover. This work demonstrates that the presence of Al2O3 nanoparticles decreases the SEE coefficient of LDPE and enhances the impact energy at the equilibrium state of surface charging. These changes can be explained by the increase of surface roughness and of surface ionization energy, and the strong interaction between nanoparticles and the polymer dielectric matrix. The surface charge and flashover voltage are calculated according to the secondary electron emission avalanche (SEEA) model, which reveals that the positive surface charges are reduced near the cathode triple point, while the presence of more nanoparticles in high loading samples enhances the gas desorption. Consequently, the surface flashover performance of LDPE/Al2O3 nanodielectrics is improved.

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The future of nanodielectrics in the electrical power industry

Cited by 498 publications

References 51 publications

Evolution of poled state in P(VDF-TrFE)/(Pb,Ba)(Zr,Ti)O3 composites probed by temperature dependent Piezoresponse and Kelvin Probe Force Microscopy

Evolution of poled state in P(VDF-TrFE)/(Pb,Ba)(Zr,Ti)O3 composites probed by temperature dependent Piezoresponse and Kelvin Probe Force Microscopy

Influence of cadmium sulfide nanoparticles on structural and electrical properties of polyvinyl alcohol films

Enhanced flashover strength in polyethylene nanodielectrics by secondary electron emission modification

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