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Journal article
Ultra‐Flyweight Cryogels of MXene/Graphene Oxide for Electromagnetic Interference Shielding
Advanced functional materials
06 Aug 2023
Abstract
Abstract MXene and graphene cryogels have demonstrated excellent electromagnetic interference (EMI) shielding effectiveness due to their exceptional electrical conductivity, low density, and ability to dissipate electromagnetic waves through numerous internal interfaces. However, their synthesis demands costly reduction techniques and/or pre‐processing methods such as freeze‐casting to achieve high EMI shielding and mechanical performance. Furthermore, limited research has been conducted on optimizing the cryogel microstructures and porosity to enhance EMI shielding effectiveness while reducing materials consumption. Herein, a novel approach to produce ultra‐lightweight cryogels composed of Ti 3 C 2 T x /graphene oxide (GO) displaying multiscale porosity is presented to enable high‐performance EMI shielding. This method uses controllable templating through the interfacial assembly of filamentous‐structured liquids that are readily converted into EMI cryogels. The obtained ultra‐flyweight cryogels (3–7 mg cm −3 ) exhibit outstanding specific EMI shielding effectiveness (33 000–50 000 dB cm 2 g −1 ) while eliminating the need for chemical or thermal reduction. Furthermore, exceptional shielding is achieved when the Ti 3 C 2 T x /GO cryogels are used as the backbone of conductive epoxy nanocomposites, yielding EMI shielding effectiveness of 31.7–51.4 dB at a low filler loading (0.3–0.7 wt%). Overall, a one‐of‐a‐kind EMI shielding system is introduced that is readily processed while affording scalability and performance.
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Details
- Title
- Ultra‐Flyweight Cryogels of MXene/Graphene Oxide for Electromagnetic Interference Shielding
- Creators
- Ahmadreza Ghaffarkhah - University of British ColumbiaSeyyed Alireza Hashemi - University of British ColumbiaSara Rostami - University of British ColumbiaMajed Amini - University of British ColumbiaFarhad Ahmadijokani - University of British ColumbiaAli Pournaghshband Isfahani - Department of Chemical and Biological Engineering Drexel University Philadelphia PA 19104 USASameer E. Mhatre - University of British ColumbiaOrlando J. Rojas - University of British ColumbiaMilad Kamkar - University of WaterlooStefan Wuttke - IkerbasqueMasoud Soroush - Drexel UniversityMohammad Arjmand - University of British Columbia
- Publication Details
- Advanced functional materials
- Publisher
- Wiley
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:001042904300001
- Scopus ID
- 2-s2.0-85166985850
- Other Identifier
- 991020966152804721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter