Flexible polyolefin dielectric by strategic design of organic modules for harsh condition electrification

Ajinkya A. Deshmukh; Chao Wu; Omer Yassin; Ankit Mishra; Lihua Chen; Abdullah Alamri; Zongze Li; Jierui Zhou; Zeynep Mutlu; Michael Sotzing; Pankaj Rajak; Stuti Shukla; John Vellek; Mohamadreza Arab Baferani; Mukerrem Cakmak; Priya Vashishta; Rampi Ramprasad; Yang Cao; Gregory Sotzing

doi:10.1039/D1EE02630E

Flexible polyolefin dielectric by strategic design of organic modules for harsh condition electrification†

Ajinkya A. Deshmukh,

‡^a Chao Wu,‡^b Omer Yassin,^c Ankit Mishra,^d Lihua Chen,

^e Abdullah Alamri,

^a Zongze Li,^bf Jierui Zhou,^bf Zeynep Mutlu,^g Michael Sotzing,^b Pankaj Rajak,^d Stuti Shukla,^c John Vellek,^c Mohamadreza Arab Baferani,^b Mukerrem Cakmak,

^g Priya Vashishta,^d Rampi Ramprasad,^e Yang Cao

*^bf and Gregory Sotzing*^ac

Author affiliations

* Corresponding authors

^a Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
E-mail: g.sotzing@uconn.edu

^b Electrical Insulation Research Center, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
E-mail: yang.cao@uconn.edu

^c Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA

^d Collaboratory for Advanced Computing and Simulations, Department of Chemical Engineering and Materials Science, Department of Physics & Astronomy, and Department of Computer Science, University of Southern California, Los Angeles, CA 90089, USA

^e School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA

^f Department of Electrical and Computer Engineering, University of Connecticut, Storrs, CT 06269, USA

^g School of Materials Engineering, Purdue University, West Lafayette, IN 47907, USA

Abstract

Flexible polymers that can withstand temperature and electric field extremes are critical to advanced electrical and electronic systems. High thermal stability of polymers is generally achieved through the introduction of highly conjugated aromatic structures, that lower the bandgap and thus diminish the electric field endurance. Here, we demonstrate a class of flexible all-organic polyolefins by a strategic modular structure design to eliminate the impact of conjugation on bandgap. The one such designed polymer exhibits superior operational temperature and T_g of 244 °C without compromising the bandgap (∼5 eV), exhibiting significantly suppressed electrical conductivity when subjected to a high electric field. It reveals the highest ever recorded energy density of 6.5 J cc⁻¹ at 200 °C, a 2× improvement over the best reported flexible dielectric polymers or polymer composites. The uncovered polymer design strategy introduces a platform for high performance dielectric development for extreme thermal and electric field conditions.

Energy & Environmental Science

Flexible polyolefin dielectric by strategic design of organic modules for harsh condition electrification†

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