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Ultra-light, high flexible and efficient CNTs/Ti3C2-sodium alginate foam for electromagnetic absorption application

Liu, Xingmin ; Chai, Nan ; Yu, Zhaoju ; Xu, Hailong ; Li, Xinliang ; Liu, Jiquan ; Yin, Xiaowei ; Riedel, Ralf
Zhang, Litong (ed.) (2019):
Ultra-light, high flexible and efficient CNTs/Ti3C2-sodium alginate foam for electromagnetic absorption application.
In: Journal of Materials Science and Technology: Special Issue, 35(12), In: Ultra High Temperature Ceramic Matrix Composites Design and Application, pp. 2859-2867,
Shenyang, Journal of Materials Science and Technology, 2nd Sino-German Symposium, Xi'an, China, April 14-20, 2018, ISSN 1005-0302,
DOI: 10.1016/j.jmst.2019.07.019,
[Conference or Workshop Item]

Abstract

Ultra-light carboxylic functionalized multi-walled carbon nanotubes (CNTs-COOH) and Ti3C2 MXene hybrids modified sodium alginate (CNTs/Ti3C2-SA) based composite foams were prepared through ice-templated freeze-drying method. The microstructure of the synthesized CNTs/Ti3C2 hybrids and CNTs/Ti3C2-SA foams is characterized by the presence of CNTs inserted between MXene layers which prevents their restacking. The resultant CNTs/Ti3C2 hybrids exhibit a unique sandwich-like hierarchical structure. Scanning electron microscopy (SEM) images show that the CNTs/Ti3C2-SA foam exhibits a heterogeneous anisotropic microstructure and CNTs/Ti3C2 hybrids are homogeneously dispersed in the skeleton of the porous foam. In case that the content of the hybrids amounts 40 mg/cm(3), the CNTs/Ti3C2-SA foam possesses excellent electromagnetic (EM) absorption performance with a minimum reflection coefficient (RCmin) as low as -40.0 dB. In case of a sample thickness of 3.95 mm, the RCmin reaches -24.4 dB and the effective absorption bandwidth covers the whole X band from 8.2 to 12.4 GHz. A control test shows that, with the same absorbent content, the CNTs/Ti3C2-SA foam exhibits a far better EM performance than that of CNT-free Ti3C2-SA foam.

Item Type: Conference or Workshop Item
Erschienen: 2019
Editors: Zhang, Litong
Creators: Liu, Xingmin ; Chai, Nan ; Yu, Zhaoju ; Xu, Hailong ; Li, Xinliang ; Liu, Jiquan ; Yin, Xiaowei ; Riedel, Ralf
Title: Ultra-light, high flexible and efficient CNTs/Ti3C2-sodium alginate foam for electromagnetic absorption application
Language: English
Abstract:

Ultra-light carboxylic functionalized multi-walled carbon nanotubes (CNTs-COOH) and Ti3C2 MXene hybrids modified sodium alginate (CNTs/Ti3C2-SA) based composite foams were prepared through ice-templated freeze-drying method. The microstructure of the synthesized CNTs/Ti3C2 hybrids and CNTs/Ti3C2-SA foams is characterized by the presence of CNTs inserted between MXene layers which prevents their restacking. The resultant CNTs/Ti3C2 hybrids exhibit a unique sandwich-like hierarchical structure. Scanning electron microscopy (SEM) images show that the CNTs/Ti3C2-SA foam exhibits a heterogeneous anisotropic microstructure and CNTs/Ti3C2 hybrids are homogeneously dispersed in the skeleton of the porous foam. In case that the content of the hybrids amounts 40 mg/cm(3), the CNTs/Ti3C2-SA foam possesses excellent electromagnetic (EM) absorption performance with a minimum reflection coefficient (RCmin) as low as -40.0 dB. In case of a sample thickness of 3.95 mm, the RCmin reaches -24.4 dB and the effective absorption bandwidth covers the whole X band from 8.2 to 12.4 GHz. A control test shows that, with the same absorbent content, the CNTs/Ti3C2-SA foam exhibits a far better EM performance than that of CNT-free Ti3C2-SA foam.

Title of Book: Ultra High Temperature Ceramic Matrix Composites Design and Application
Series Name: Journal of Materials Science and Technology: Special Issue
Volume: 35(12)
Place of Publication: Shenyang
Publisher: Journal of Materials Science and Technology
Uncontrolled Keywords: Carbon nanotubes; MXene; Sodium alginate; Electromagnetic absorption properties REDUCED GRAPHENE OXIDES; WALL CARBON NANOTUBES; MICROWAVE-ABSORPTION; TI3C2 MXENES; LIGHTWEIGHT; ZNO; PERMITTIVITY; ENHANCEMENT; COMPOSITES
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
Event Title: 2nd Sino-German Symposium
Event Location: Xi'an, China
Event Dates: April 14-20, 2018
Date Deposited: 14 Jan 2020 13:29
DOI: 10.1016/j.jmst.2019.07.019
Official URL: https://www.sciencedirect.com/science/article/pii/S100503021...
Projects: Chinese Soc Composite Mat, NW Polytechn Univ, CMC Branch, Xian Golden Mountain Ceram Composites Co Ltd, NW Polytechn Univ
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