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

Shan Wu, Quinn Burlingame, Weiping Li, Minren Lin, Yue Zhou, Qin Chen, Andrew Payzant, Kai Xiao, Qiming Zhang

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


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

    Publication series

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


    Other2012 MRS Fall Meeting
    Country/TerritoryUnited States
    CityBoston, MA

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering


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