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

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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