Enhanced Energy Storage Properties of Polyetherimide Film Capacitors Filled with Boron Nitride Nanosheets

He Li, Lulu Ren, Ding Ai, Zongliang Xie, Sijia Zhu, Peng Liu, Zongren Peng, Qing Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Advanced dielectric film capacitors with high energy density and charge-discharge efficiency are urgently needed with ever-increasing demand of energy storage devices for electronics and power systems. Herein, polyetherimide (PEI)/boron nitride nanosheets (BNNSs) nanocomposites with homogeneous structures prepared by facile solution-processing are demonstrated. It is found that the incorporation of BNNSs enhances multiple dielectric properties of polymer matrix including DC dielectric breakdown strength and volume resistivity. Compared with pristine PEI film, the PEI/BNNSs nanocomposite films exhibit concomitant enhancements in discharged energy density and charge-discharge efficiency which is owing to the increase of breakdown strength and the decrease of dielectric loss. Additionally, excellent high-temperature energy storage capabilities also have been achieved in the PEI/BNNSs nanocomposites, e.g. 2.83 J/cm3 of discharged energy density measured at 450 MV/m and 150 oC. This composite approach paves a way of flexible polymeric dielectrics for high-temperature energy storage applications.

Original languageEnglish (US)
Title of host publication2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages54-57
Number of pages4
ISBN (Electronic)9781728131214
DOIs
StatePublished - Oct 2019
Event2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019 - Richland, United States
Duration: Oct 20 2019Oct 23 2019

Publication series

NameAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Volume2019-October
ISSN (Print)0084-9162

Conference

Conference2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2019
CountryUnited States
CityRichland
Period10/20/1910/23/19

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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