Flexible cyclic-olefin with enhanced dipolar relaxation for harsh condition electrification
Abstract
Flexible polymer dielectrics operable under not only electrical but also thermal extremes are desired for high-power-density and high-payload-efficiency electrification. Unfortunately, state-of-the-art high-temperature polymers exhibit largely reduced electrical energy storage performance, as traditionally their bandgaps are inversely correlated to the dielectric constants. Here, an all-organic polymer was reported with high dielectric constant originating from the enhanced dipolar relaxation, an uncompromised large bandgap of 4.84 eV, and a high glass transition temperature of 178 °C by locally decoupling the conjugation of polymer backbones. This rational strategic design uncovers a large unexplored space for the design of polymer dielectrics for multiple harsh conditions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 02, 2021
- Source ID
- 10.1073/pnas.2115367118
Entities
People
- Abdullah Alamri
- Ajinkya A. Deshmukh
- Chao Wu
- Gregory A. Sotzing
- Jierui Zhou
- John Vellek
- Michael Sotzing
- Omer Yassin
- Riccardo Casalini
- Stuti Shukla
- Yang Cao
Organizations
- Office of Naval Research
- United States Naval Research Laboratory
- University of Connecticut