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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202000499
|2 doi
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|a pubmed24n1027.xml
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|a (DE-627)NLM308353757
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|a (NLM)32249991
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Wu, Chao
|e verfasserin
|4 aut
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| 245 |
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|a Flexible Temperature-Invariant Polymer Dielectrics with Large Bandgap
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Flexible dielectrics operable under simultaneous electric and thermal extremes are critical to advanced electronics for ultrahigh densities and/or harsh conditions. However, conventional high-performance polymer dielectrics generally have conjugated aromatic backbones, leading to limited bandgaps and hence high conduction loss and poor energy densities, especially at elevated temperatures. A polyoxafluoronorbornene is reported, which has a key design feature in that it is a polyolefin consisting of repeating units of fairly rigid fused bicyclic structures and alkenes separated by freely rotating single bonds, endowing it with a large bandgap of ≈5 eV and flexibility, while being temperature-invariantly stable over -160 to 160 °C. At 150 °C, the polyoxafluoronorbornene exhibits an electrical conductivity two orders of magnitude lower than the best commercial high-temperature polymers, and features an unprecedented discharged energy density of 5.7 J cm-3 far outperforming the best reported flexible dielectrics. The design strategy uncovered in this work reveals a hitherto unexplored space for the design of scalable and efficient polymer dielectrics for electrical power and electronic systems under concurrent harsh electrical and thermal conditions
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|a Journal Article
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|a capacitors
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|a elevated temperature
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|a energy storage
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|a large bandgap
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4 |
|a polymer dielectrics
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1 |
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|a Deshmukh, Ajinkya A
|e verfasserin
|4 aut
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1 |
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|a Li, Zongze
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Lihua
|e verfasserin
|4 aut
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|a Alamri, Abdullah
|e verfasserin
|4 aut
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1 |
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|a Wang, Yifei
|e verfasserin
|4 aut
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1 |
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|a Ramprasad, Rampi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sotzing, Gregory A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cao, Yang
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 21 vom: 02. Mai, Seite e2000499
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:32
|g year:2020
|g number:21
|g day:02
|g month:05
|g pages:e2000499
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|u http://dx.doi.org/10.1002/adma.202000499
|3 Volltext
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|d 32
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