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Electromagnetic shielding performance of SiC/graphitic carbon-SiCN porous ceramic nanocomposites derived from catalyst assisted single-source-precursors

Liu, Xingmin ; Xu, Hailong ; Liu, Guoqiang ; Duan, Wenyan ; Zhang, Yi ; Fan, Xiaomeng ; Riedel, Ralf (2021):
Electromagnetic shielding performance of SiC/graphitic carbon-SiCN porous ceramic nanocomposites derived from catalyst assisted single-source-precursors.
In: Journal of the European Ceramic Society, 41 (9), pp. 4806-4814. Elsevier, ISSN 0955-2219, e-ISSN 1873-619X,
DOI: 10.1016/j.jeurceramsoc.2021.03.026,
[Article]

Abstract

In this work, SiC nanowires and graphitic carbon (GC) including 2D reduced graphene oxide and graphene-liked ribbons modified polymer derived SiCN (SiC/GC-SiCN) porous ceramic monoliths were prepared via catalyst assisted single-source-precursor derived ceramic route. The inclusion of absorbents (e.g. graphitic carbon and SiC nanowires) significantly improved the electrical conductivity of the materials from 1.77 ? 10-8 S/cm (pristine SiCN) to 0.56 S/cm. In turn, the electromagnetic interference shielding effectiveness (EMI SE) of the ceramic increased significantly from 4.0 dB to 19.2 dB. At the highest absorbent content, the SiC/GC-SiCN ceramics exhibit a high absorption power of 0.3 nW and an SE of 48.5 dB at thickness of 2 mm, which means more than 99.998 % of the EM wave is blocked. This work finds new avenue for the design of advanced electromagnetic shielding materials possessing strong absorption capability.

Item Type: Article
Erschienen: 2021
Creators: Liu, Xingmin ; Xu, Hailong ; Liu, Guoqiang ; Duan, Wenyan ; Zhang, Yi ; Fan, Xiaomeng ; Riedel, Ralf
Title: Electromagnetic shielding performance of SiC/graphitic carbon-SiCN porous ceramic nanocomposites derived from catalyst assisted single-source-precursors
Language: English
Abstract:

In this work, SiC nanowires and graphitic carbon (GC) including 2D reduced graphene oxide and graphene-liked ribbons modified polymer derived SiCN (SiC/GC-SiCN) porous ceramic monoliths were prepared via catalyst assisted single-source-precursor derived ceramic route. The inclusion of absorbents (e.g. graphitic carbon and SiC nanowires) significantly improved the electrical conductivity of the materials from 1.77 ? 10-8 S/cm (pristine SiCN) to 0.56 S/cm. In turn, the electromagnetic interference shielding effectiveness (EMI SE) of the ceramic increased significantly from 4.0 dB to 19.2 dB. At the highest absorbent content, the SiC/GC-SiCN ceramics exhibit a high absorption power of 0.3 nW and an SE of 48.5 dB at thickness of 2 mm, which means more than 99.998 % of the EM wave is blocked. This work finds new avenue for the design of advanced electromagnetic shielding materials possessing strong absorption capability.

Journal or Publication Title: Journal of the European Ceramic Society
Journal volume: 41
Number: 9
Publisher: Elsevier
Uncontrolled Keywords: Electromagnetic shielding, RGO, SiCN ceramic, Graphene-like ribbons, Polymer derived ceramics
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 11 Jun 2021 06:01
DOI: 10.1016/j.jeurceramsoc.2021.03.026
Official URL: https://www.sciencedirect.com/science/article/abs/pii/S09552...
Additional Information:

National Natural Science Foundation of China (NSFC), Grant Numbers 52002325, 51332004. National Natural Science Foundation of China (NSFC), National Science Fund for Distinguished Young Scholars, Grant Number 51725205. Fundamental Research Funds for the Central Universities, Grant Numbers 3102019TS0405, 20GH020117. Career Bridging Grant from Technische Universitat Darmstadt.

Projects: National Natural Science Foundation of China (NSFC), Grant Numbers 52002325, 51332004, National Natural Science Foundation of China (NSFC); National Science Fund for Distinguished Young Scholars, Grant Number 51725205, Fundamental Research Funds for the Central Universities, Grant Numbers 3102019TS0405, 20GH020117, Career Bridging Grant from Technische Universitat Darmstadt
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