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

Liu, Xingmin and Chai, Nan and Yu, Zhaoju and Xu, Hailong and Li, Xinliang and Liu, Jiquan and Yin, Xiaowei and Riedel, Ralf Zhang, Litong (ed.) (2019):
Ultra-light, high flexible and efficient CNTs/Ti3C2-sodium alginate foam for electromagnetic absorption application.
35(12)In: Journal of Materials Science and Technology: Special Issue, In: Ultra High Temperature Ceramic Matrix Composites Design and Application, Shenyang, Journal of Materials Science and Technology, In: 2nd Sino-German Symposium, Xi'an, China, April 14-20, 2018, pp. 2859-2867, ISSN 1005-0302,
DOI: 10.1016/j.jmst.2019.07.019,
[Online-Edition: https://www.sciencedirect.com/science/article/pii/S100503021...],
[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 and Chai, Nan and Yu, Zhaoju and Xu, Hailong and Li, Xinliang and Liu, Jiquan and Yin, Xiaowei and 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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