Dielectric characteristics of poly(ether ketone ketone) for high temperature capacitive energy storage

Jilin Pan, Kun Li, Junjun Li, Tim Hsu, Qing Wang

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

The dielectric constant and loss of poly(ether ketone ketone) have been investigated over a range of frequency and temperature. A linear correlation between the ac conductance and the angular frequency implies that the hopping as a dominant conduction process contributes to the dielectric loss. The energy density and discharged efficiency of the polymer were measured at various temperatures. High dielectric strengths (>400 MV/m) at temperatures up to 150 °C have been achieved. The increase of the dielectric loss and reduction in the breakdown field with increasing temperature could be attributed to thermally enhanced conduction of charge carriers in the polymer.

Original languageEnglish (US)
Article number022902
JournalApplied Physics Letters
Volume95
Issue number2
DOIs
StatePublished - Jul 24 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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