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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)
doi: 10.1016/j.jeurceramsoc.2021.03.026
Article, Bibliographie

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
Type of entry: Bibliographie
Title: Electromagnetic shielding performance of SiC/graphitic carbon-SiCN porous ceramic nanocomposites derived from catalyst assisted single-source-precursors
Language: English
Date: August 2021
Publisher: Elsevier
Journal or Publication Title: Journal of the European Ceramic Society
Volume of the journal: 41
Issue Number: 9
DOI: 10.1016/j.jeurceramsoc.2021.03.026
URL / URN: https://www.sciencedirect.com/science/article/abs/pii/S09552...
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.

Uncontrolled Keywords: Electromagnetic shielding, RGO, SiCN ceramic, Graphene-like ribbons, Polymer derived ceramics
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.

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
Last Modified: 23 Sep 2021 05:30
PPN:
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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