Cation Bimetallic MOF Anchored Carbon Fiber for Highly Efficient Microwave Absorption
© 2024 Wiley-VCH GmbH..
Carbon fiber (CF) is a potential microwave absorption (MA) material due to the strong dielectric loss. Nevertheless, owing to the high conductivity, poor impedance matching of carbon-based materials results in limited MA performance. How to solve this problem and achieve excellent MA performance remains a principal challenge. Herein, taking full advantage of CF and excellent impedance matching of bimetallic metal-organic frameworks (MOF) derivatives layer, an excellent microwave absorber based on micron-scale 1D CF and NiCoMOF (CFNiCoMOF-800) is developed. After adjusting the oxygen vacancies of the bimetallic MOF, the resultant microwave absorber presented excellent MA properties including the minimum reflection loss (RLmin ) of -80.63 dB and wide effective absorption bandwidth (EAB) of 8.01 GHz when its mass percent is only 5 wt.% and the thickness is 2.59 mm. Simultaneously, the mechanical properties of the epoxy resin (EP)-based coating with this microwave absorber are effectively improved. The hardness (H), elastic modulus (E), bending strength, and compressive strength of CF@NiCoMOF-800/EP coating are 334 MPa, 5.56 GPa, 82.2 MPa, and 135.8 MPa, which is 38%, 15%, 106% and 53% higher than EP coating. This work provides a promising solution for carbon materials achieving excellent MA properties and mechanical properties.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2024 |
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| Enthalten in: |
Small (Weinheim an der Bergstrasse, Germany) - (2024) vom: 19. März, Seite e2312135 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zhang, Feng [VerfasserIn] |
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| Links: |
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| Themen: |
Carbon fiber |
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| Anmerkungen: |
Date Revised 19.03.2024 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1002/smll.202312135 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM369914325 |
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| 520 | |a © 2024 Wiley-VCH GmbH. | ||
| 520 | |a Carbon fiber (CF) is a potential microwave absorption (MA) material due to the strong dielectric loss. Nevertheless, owing to the high conductivity, poor impedance matching of carbon-based materials results in limited MA performance. How to solve this problem and achieve excellent MA performance remains a principal challenge. Herein, taking full advantage of CF and excellent impedance matching of bimetallic metal-organic frameworks (MOF) derivatives layer, an excellent microwave absorber based on micron-scale 1D CF and NiCoMOF (CFNiCoMOF-800) is developed. After adjusting the oxygen vacancies of the bimetallic MOF, the resultant microwave absorber presented excellent MA properties including the minimum reflection loss (RLmin ) of -80.63 dB and wide effective absorption bandwidth (EAB) of 8.01 GHz when its mass percent is only 5 wt.% and the thickness is 2.59 mm. Simultaneously, the mechanical properties of the epoxy resin (EP)-based coating with this microwave absorber are effectively improved. The hardness (H), elastic modulus (E), bending strength, and compressive strength of CF@NiCoMOF-800/EP coating are 334 MPa, 5.56 GPa, 82.2 MPa, and 135.8 MPa, which is 38%, 15%, 106% and 53% higher than EP coating. This work provides a promising solution for carbon materials achieving excellent MA properties and mechanical properties | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a NiCoMOF | |
| 650 | 4 | |a carbon fiber | |
| 650 | 4 | |a defect-induced polarization | |
| 700 | 1 | |a Li, Nan |e verfasserin |4 aut | |
| 700 | 1 | |a Shi, Jun-Feng |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Yue-Yi |e verfasserin |4 aut | |
| 700 | 1 | |a Yan, Ding-Xiang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Zhong-Ming |e verfasserin |4 aut | |
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