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Aromatic polythiourea with ultrahigh breakdown strength for high energy density and low loss capacitor applications

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Dielectric capacitors for energy storage are of great importance in modern electronics and electric systems. It is a challenge to realize the high energy density while maintain the low dielectric loss. We investigated an ultra high breakdown electric field of 1.1 GV/m, which is approaching the intrinsic breakdown, in aromatic polythiourea, a new dielectric material that serves a high energy density of 23 J/cm3 as well as high charge-discharge efficiency above 90%. The molecular structure and film surface morphology were also studied, it was proved a polar amorphous phase and glass state material could significantly suppress the high field conduction to several orders smaller compared with regular polymer dielectric materials, which are usually semi-crystalline and in rubber phase.

    Original languageEnglish
    Title of host publicationPrecision Polymer Materials
    Subtitle of host publicationFabricating Functional Assemblies, Surfaces, Interlaces and Devices
    PublisherMaterials Research Society
    Pages44-48
    Number of pages5
    ISBN (Print)9781632660923
    DOIs
    StatePublished - 2013
    Event2012 MRS Fall Meeting - Boston, MA, United States
    Duration: Nov 25 2012Nov 30 2012

    Publication series

    NameMaterials Research Society Symposium Proceedings
    Volume1499
    ISSN (Print)0272-9172

    Conference

    Conference2012 MRS Fall Meeting
    Country/TerritoryUnited States
    CityBoston, MA
    Period11/25/1211/30/12

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