Nanocellulose‐MXene Biomimetic Aerogels with Orientation‐Tunable Electromagnetic Interference Shielding Performance
Abstract Designing lightweight nanostructured aerogels for high‐performance electromagnetic interference (EMI) shielding is crucial yet challenging. Ultrathin cellulose nanofibrils (CNFs) are employed for assisting in building ultralow‐density, robust, and highly flexible transition metal carbides a...
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| Format: | Article |
| Language: | English |
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Wiley
2020-08-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202000979 |
| _version_ | 1819042429789011968 |
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| author | Zhihui Zeng Changxian Wang Gilberto Siqueira Daxin Han Anja Huch Sina Abdolhosseinzadeh Jakob Heier Frank Nüesch Chuanfang (John) Zhang Gustav Nyström |
| author_facet | Zhihui Zeng Changxian Wang Gilberto Siqueira Daxin Han Anja Huch Sina Abdolhosseinzadeh Jakob Heier Frank Nüesch Chuanfang (John) Zhang Gustav Nyström |
| author_sort | Zhihui Zeng |
| collection | DOAJ |
| description | Abstract Designing lightweight nanostructured aerogels for high‐performance electromagnetic interference (EMI) shielding is crucial yet challenging. Ultrathin cellulose nanofibrils (CNFs) are employed for assisting in building ultralow‐density, robust, and highly flexible transition metal carbides and nitrides (MXenes) aerogels with oriented biomimetic cell walls. A significant influence of the angles between oriented cell walls and the incident EM wave electric field direction on the EMI shielding performance is revealed, providing an intriguing microstructure design strategy. MXene “bricks” bonded by CNF “mortars” of the nacre‐like cell walls induce high mechanical strength, electrical conductivity, and interfacial polarization, yielding the resultant MXene/CNF aerogels an ultrahigh EMI shielding performance. The EMI shielding effectiveness (SE) of the aerogels reaches 74.6 or 35.5 dB at a density of merely 8.0 or 1.5 mg cm–3, respectively. The normalized surface specific SE is up to 189 400 dB cm2 g–1, significantly exceeding that of other EMI shielding materials reported so far. |
| first_indexed | 2024-12-21T09:40:45Z |
| format | Article |
| id | doaj.art-a4365e75830a456aa1161bc14430bf97 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-21T09:40:45Z |
| publishDate | 2020-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-a4365e75830a456aa1161bc14430bf972022-12-21T19:08:28ZengWileyAdvanced Science2198-38442020-08-01715n/an/a10.1002/advs.202000979Nanocellulose‐MXene Biomimetic Aerogels with Orientation‐Tunable Electromagnetic Interference Shielding PerformanceZhihui Zeng0Changxian Wang1Gilberto Siqueira2Daxin Han3Anja Huch4Sina Abdolhosseinzadeh5Jakob Heier6Frank Nüesch7Chuanfang (John) Zhang8Gustav Nyström9Laboratory for Cellulose & Wood Materials Swiss Federal Laboratories for Materials Science and Technology (Empa) Dübendorf 8600 SwitzerlandSchool of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 SingaporeLaboratory for Cellulose & Wood Materials Swiss Federal Laboratories for Materials Science and Technology (Empa) Dübendorf 8600 SwitzerlandDepartment of Information Technology and Electrical Engineering Swiss Federal Institute of Technology in Zurich (ETH Zürich) Zürich 8092 SwitzerlandLaboratory for Cellulose & Wood Materials Swiss Federal Laboratories for Materials Science and Technology (Empa) Dübendorf 8600 SwitzerlandLaboratory for Functional Polymers Empa Dübendorf 8600 SwitzerlandLaboratory for Functional Polymers Empa Dübendorf 8600 SwitzerlandLaboratory for Functional Polymers Empa Dübendorf 8600 SwitzerlandLaboratory for Functional Polymers Empa Dübendorf 8600 SwitzerlandLaboratory for Cellulose & Wood Materials Swiss Federal Laboratories for Materials Science and Technology (Empa) Dübendorf 8600 SwitzerlandAbstract Designing lightweight nanostructured aerogels for high‐performance electromagnetic interference (EMI) shielding is crucial yet challenging. Ultrathin cellulose nanofibrils (CNFs) are employed for assisting in building ultralow‐density, robust, and highly flexible transition metal carbides and nitrides (MXenes) aerogels with oriented biomimetic cell walls. A significant influence of the angles between oriented cell walls and the incident EM wave electric field direction on the EMI shielding performance is revealed, providing an intriguing microstructure design strategy. MXene “bricks” bonded by CNF “mortars” of the nacre‐like cell walls induce high mechanical strength, electrical conductivity, and interfacial polarization, yielding the resultant MXene/CNF aerogels an ultrahigh EMI shielding performance. The EMI shielding effectiveness (SE) of the aerogels reaches 74.6 or 35.5 dB at a density of merely 8.0 or 1.5 mg cm–3, respectively. The normalized surface specific SE is up to 189 400 dB cm2 g–1, significantly exceeding that of other EMI shielding materials reported so far.https://doi.org/10.1002/advs.202000979aerogelscellulose nanofibrilsEMI shieldinglightweight materialsMXenes |
| spellingShingle | Zhihui Zeng Changxian Wang Gilberto Siqueira Daxin Han Anja Huch Sina Abdolhosseinzadeh Jakob Heier Frank Nüesch Chuanfang (John) Zhang Gustav Nyström Nanocellulose‐MXene Biomimetic Aerogels with Orientation‐Tunable Electromagnetic Interference Shielding Performance Advanced Science aerogels cellulose nanofibrils EMI shielding lightweight materials MXenes |
| title | Nanocellulose‐MXene Biomimetic Aerogels with Orientation‐Tunable Electromagnetic Interference Shielding Performance |
| title_full | Nanocellulose‐MXene Biomimetic Aerogels with Orientation‐Tunable Electromagnetic Interference Shielding Performance |
| title_fullStr | Nanocellulose‐MXene Biomimetic Aerogels with Orientation‐Tunable Electromagnetic Interference Shielding Performance |
| title_full_unstemmed | Nanocellulose‐MXene Biomimetic Aerogels with Orientation‐Tunable Electromagnetic Interference Shielding Performance |
| title_short | Nanocellulose‐MXene Biomimetic Aerogels with Orientation‐Tunable Electromagnetic Interference Shielding Performance |
| title_sort | nanocellulose mxene biomimetic aerogels with orientation tunable electromagnetic interference shielding performance |
| topic | aerogels cellulose nanofibrils EMI shielding lightweight materials MXenes |
| url | https://doi.org/10.1002/advs.202000979 |
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