Aromatic Polyurea Possessing High Electrical Energy Density and Low Loss

Yash Thakur, Minren Lin, Shan Wu, Q. M. Zhang

    Research output: Contribution to journalArticlepeer-review

    15 Scopus citations


    We report the development of a dielectric polymer, poly (ether methyl ether urea) (PEMEU), which possesses a dielectric constant of 4 and is thermally stable up to 150°C. The experimental results show that the ether units are effective in softening the rigid polymer and making it thermally processable, while the high dipole moment of urea units and glass structure of the polymer leads to a low dielectric loss and low conduction loss. As a result, PEMEU high quality thin films can be fabricated which exhibit exceptionally high breakdown field of >1.5 GV/m, and a low conduction loss at fields up to the breakdown. Consequently, the PEMEU films exhibit a high charge–discharge efficiency of 90% and a high discharged energy density of 36 J/cm3.

    Original languageEnglish (US)
    Pages (from-to)4721-4725
    Number of pages5
    JournalJournal of Electronic Materials
    Issue number10
    StatePublished - Oct 1 2016

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering
    • Materials Chemistry


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