Electrical energy density and discharge characteristics of a poly(vinylidene fluoride-chlorotrifluoroethylene) copolymer

Xin Zhou; Baojin Chu; Bret Neese; Minren Lin; Q. M. Zhang

doi:10.1109/TDEI.2007.4339472

Electrical energy density and discharge characteristics of a poly(vinylidene fluoride-chlorotrifluoroethylene) copolymer

Xin Zhou, Baojin Chu, Bret Neese, Minren Lin, Q. M. Zhang

Research output: Contribution to journal › Article › peer-review

238 Scopus citations

Abstract

The high electric displacement (D>0.1 C/m²) and breakdown field (>600 MV/m) in polyvinylidene fluoride based polymers suggest high electrical energy density in this class of polymers. By defect modifications which reduce or eliminate the remnant polarization in the polymer, a high electrical energy density can indeed be obtained. This paper shows that in properly prepared P(VDF-CTFE) copolymer film capacitors, an electrical energy density ∼ 25 J/cm³ can be obtained with a breakdown field higher than 600 MV/m. The dielectric and discharge behavior of the polymer films were investigated. The results reveal that there are strong frequency dispersions in both the dielectric and discharge behavior. The dielectric constant decreases with frequency and the discharged energy density is also reduced at shorted discharge time (∼ 1 μs) due to increased ESR for fast discharge. The results indicate the potential of this class of polymers for high energy density capacitors and suggest the need for further tuning of the polymer compositions to reduce the frequency dispersion.

Original language	English (US)
Pages (from-to)	1133-1138
Number of pages	6
Journal	IEEE Transactions on Dielectrics and Electrical Insulation
Volume	14
Issue number	5
DOIs	https://doi.org/10.1109/TDEI.2007.4339472
State	Published - Oct 2007

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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10.1109/TDEI.2007.4339472

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title = "Electrical energy density and discharge characteristics of a poly(vinylidene fluoride-chlorotrifluoroethylene) copolymer",

abstract = "The high electric displacement (D>0.1 C/m2) and breakdown field (>600 MV/m) in polyvinylidene fluoride based polymers suggest high electrical energy density in this class of polymers. By defect modifications which reduce or eliminate the remnant polarization in the polymer, a high electrical energy density can indeed be obtained. This paper shows that in properly prepared P(VDF-CTFE) copolymer film capacitors, an electrical energy density ∼ 25 J/cm3 can be obtained with a breakdown field higher than 600 MV/m. The dielectric and discharge behavior of the polymer films were investigated. The results reveal that there are strong frequency dispersions in both the dielectric and discharge behavior. The dielectric constant decreases with frequency and the discharged energy density is also reduced at shorted discharge time (∼ 1 μs) due to increased ESR for fast discharge. The results indicate the potential of this class of polymers for high energy density capacitors and suggest the need for further tuning of the polymer compositions to reduce the frequency dispersion.",

author = "Xin Zhou and Baojin Chu and Bret Neese and Minren Lin and Zhang, {Q. M.}",

note = "Funding Information: This work was supported by ONR under Grant No. N00014-05-1-0455 and Grant No. N00014-05-1-0541(MURI).",

year = "2007",

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doi = "10.1109/TDEI.2007.4339472",

language = "English (US)",

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T1 - Electrical energy density and discharge characteristics of a poly(vinylidene fluoride-chlorotrifluoroethylene) copolymer

AU - Zhou, Xin

AU - Chu, Baojin

AU - Neese, Bret

AU - Lin, Minren

AU - Zhang, Q. M.

N1 - Funding Information: This work was supported by ONR under Grant No. N00014-05-1-0455 and Grant No. N00014-05-1-0541(MURI).

PY - 2007/10

Y1 - 2007/10

N2 - The high electric displacement (D>0.1 C/m2) and breakdown field (>600 MV/m) in polyvinylidene fluoride based polymers suggest high electrical energy density in this class of polymers. By defect modifications which reduce or eliminate the remnant polarization in the polymer, a high electrical energy density can indeed be obtained. This paper shows that in properly prepared P(VDF-CTFE) copolymer film capacitors, an electrical energy density ∼ 25 J/cm3 can be obtained with a breakdown field higher than 600 MV/m. The dielectric and discharge behavior of the polymer films were investigated. The results reveal that there are strong frequency dispersions in both the dielectric and discharge behavior. The dielectric constant decreases with frequency and the discharged energy density is also reduced at shorted discharge time (∼ 1 μs) due to increased ESR for fast discharge. The results indicate the potential of this class of polymers for high energy density capacitors and suggest the need for further tuning of the polymer compositions to reduce the frequency dispersion.

AB - The high electric displacement (D>0.1 C/m2) and breakdown field (>600 MV/m) in polyvinylidene fluoride based polymers suggest high electrical energy density in this class of polymers. By defect modifications which reduce or eliminate the remnant polarization in the polymer, a high electrical energy density can indeed be obtained. This paper shows that in properly prepared P(VDF-CTFE) copolymer film capacitors, an electrical energy density ∼ 25 J/cm3 can be obtained with a breakdown field higher than 600 MV/m. The dielectric and discharge behavior of the polymer films were investigated. The results reveal that there are strong frequency dispersions in both the dielectric and discharge behavior. The dielectric constant decreases with frequency and the discharged energy density is also reduced at shorted discharge time (∼ 1 μs) due to increased ESR for fast discharge. The results indicate the potential of this class of polymers for high energy density capacitors and suggest the need for further tuning of the polymer compositions to reduce the frequency dispersion.

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Electrical energy density and discharge characteristics of a poly(vinylidene fluoride-chlorotrifluoroethylene) copolymer

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