Polymer Dielectrics with Outstanding Dielectric Characteristics via Passivation with Oxygen Atoms through C-F Vacancy Carbonylation
The development of advanced electrical equipment necessitates polymer dielectrics with a higher electric strength. Unfortunately, this bottleneck problem has yet to be solved because current material modification methods do not allow direct control of deep traps. Here, we propose a method for directly passivating deep traps. Measurements of nanoscale microregion charge characteristics and trap parameters reveal a significant reduction in the number of deep traps. The resulting polymer dielectric has an impressively high electrical strength, less surface charge accumulation, and a significantly increased flashover voltage and breakdown strength. In addition, the energy storage density is increased without sacrificing the charge-discharge efficiency. This reveals a new approach to increasing the energy storage density by reducing the trap energy levels at the electrode-dielectric interface. We further calculated and analyzed the microscopic physical mechanism of deep trap passivation based on density functional theory and characterized the contributions of orbital composition and orbital hybridization.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:23 |
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| Enthalten in: |
Nano letters - 23(2023), 18 vom: 27. Sept., Seite 8808-8815 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wang, Tian-Yu [VerfasserIn] |
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| Links: |
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| Themen: |
DFT calculation |
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| Anmerkungen: |
Date Revised 27.09.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acs.nanolett.3c01987 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM359602428 |
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| 520 | |a The development of advanced electrical equipment necessitates polymer dielectrics with a higher electric strength. Unfortunately, this bottleneck problem has yet to be solved because current material modification methods do not allow direct control of deep traps. Here, we propose a method for directly passivating deep traps. Measurements of nanoscale microregion charge characteristics and trap parameters reveal a significant reduction in the number of deep traps. The resulting polymer dielectric has an impressively high electrical strength, less surface charge accumulation, and a significantly increased flashover voltage and breakdown strength. In addition, the energy storage density is increased without sacrificing the charge-discharge efficiency. This reveals a new approach to increasing the energy storage density by reducing the trap energy levels at the electrode-dielectric interface. We further calculated and analyzed the microscopic physical mechanism of deep trap passivation based on density functional theory and characterized the contributions of orbital composition and orbital hybridization | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a polymer dielectric | |
| 700 | 1 | |a Li, Xiao-Fen |e verfasserin |4 aut | |
| 700 | 1 | |a Jie, Ziyao |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Bai-Xin |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Guixin |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Jian-Bo |e verfasserin |4 aut | |
| 700 | 1 | |a Dang, Zhi-Min |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Zhong Lin |e verfasserin |4 aut | |
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