Magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding
Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate ma...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Liu, Ji [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017transfer abstract |
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| Schlagwörter: |
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| Umfang: |
8 |
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| Übergeordnetes Werk: |
Enthalten in: No title available - an international journal, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:151 ; year:2017 ; day:20 ; month:10 ; pages:71-78 ; extent:8 |
| Links: |
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| DOI / URN: |
10.1016/j.compscitech.2017.08.005 |
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ELV030406498 |
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| 245 | 1 | 0 | |a Magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding |
| 264 | 1 | |c 2017transfer abstract | |
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| 520 | |a Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. | ||
| 520 | |a Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. | ||
| 650 | 7 | |a Electrical properties |2 Elsevier | |
| 650 | 7 | |a Functional composites |2 Elsevier | |
| 650 | 7 | |a Structural composites |2 Elsevier | |
| 650 | 7 | |a Magnetic properties |2 Elsevier | |
| 700 | 1 | |a Zhang, Hao-Bin |4 oth | |
| 700 | 1 | |a Liu, Yafeng |4 oth | |
| 700 | 1 | |a Wang, Qiwei |4 oth | |
| 700 | 1 | |a Liu, Zhangshuo |4 oth | |
| 700 | 1 | |a Mai, Yiu-Wing |4 oth | |
| 700 | 1 | |a Yu, Zhong-Zhen |4 oth | |
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10.1016/j.compscitech.2017.08.005 doi GBV00000000000375.pica (DE-627)ELV030406498 (ELSEVIER)S0266-3538(17)31687-1 DE-627 ger DE-627 rakwb eng Liu, Ji verfasserin aut Magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding 2017transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Electrical properties Elsevier Functional composites Elsevier Structural composites Elsevier Magnetic properties Elsevier Zhang, Hao-Bin oth Liu, Yafeng oth Wang, Qiwei oth Liu, Zhangshuo oth Mai, Yiu-Wing oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:151 year:2017 day:20 month:10 pages:71-78 extent:8 https://doi.org/10.1016/j.compscitech.2017.08.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 151 2017 20 1020 71-78 8 |
| spelling |
10.1016/j.compscitech.2017.08.005 doi GBV00000000000375.pica (DE-627)ELV030406498 (ELSEVIER)S0266-3538(17)31687-1 DE-627 ger DE-627 rakwb eng Liu, Ji verfasserin aut Magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding 2017transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Electrical properties Elsevier Functional composites Elsevier Structural composites Elsevier Magnetic properties Elsevier Zhang, Hao-Bin oth Liu, Yafeng oth Wang, Qiwei oth Liu, Zhangshuo oth Mai, Yiu-Wing oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:151 year:2017 day:20 month:10 pages:71-78 extent:8 https://doi.org/10.1016/j.compscitech.2017.08.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 151 2017 20 1020 71-78 8 |
| allfields_unstemmed |
10.1016/j.compscitech.2017.08.005 doi GBV00000000000375.pica (DE-627)ELV030406498 (ELSEVIER)S0266-3538(17)31687-1 DE-627 ger DE-627 rakwb eng Liu, Ji verfasserin aut Magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding 2017transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Electrical properties Elsevier Functional composites Elsevier Structural composites Elsevier Magnetic properties Elsevier Zhang, Hao-Bin oth Liu, Yafeng oth Wang, Qiwei oth Liu, Zhangshuo oth Mai, Yiu-Wing oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:151 year:2017 day:20 month:10 pages:71-78 extent:8 https://doi.org/10.1016/j.compscitech.2017.08.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 151 2017 20 1020 71-78 8 |
| allfieldsGer |
10.1016/j.compscitech.2017.08.005 doi GBV00000000000375.pica (DE-627)ELV030406498 (ELSEVIER)S0266-3538(17)31687-1 DE-627 ger DE-627 rakwb eng Liu, Ji verfasserin aut Magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding 2017transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Electrical properties Elsevier Functional composites Elsevier Structural composites Elsevier Magnetic properties Elsevier Zhang, Hao-Bin oth Liu, Yafeng oth Wang, Qiwei oth Liu, Zhangshuo oth Mai, Yiu-Wing oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:151 year:2017 day:20 month:10 pages:71-78 extent:8 https://doi.org/10.1016/j.compscitech.2017.08.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 151 2017 20 1020 71-78 8 |
| allfieldsSound |
10.1016/j.compscitech.2017.08.005 doi GBV00000000000375.pica (DE-627)ELV030406498 (ELSEVIER)S0266-3538(17)31687-1 DE-627 ger DE-627 rakwb eng Liu, Ji verfasserin aut Magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding 2017transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. Electrical properties Elsevier Functional composites Elsevier Structural composites Elsevier Magnetic properties Elsevier Zhang, Hao-Bin oth Liu, Yafeng oth Wang, Qiwei oth Liu, Zhangshuo oth Mai, Yiu-Wing oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:151 year:2017 day:20 month:10 pages:71-78 extent:8 https://doi.org/10.1016/j.compscitech.2017.08.005 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 151 2017 20 1020 71-78 8 |
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Liu, Ji @@aut@@ Zhang, Hao-Bin @@oth@@ Liu, Yafeng @@oth@@ Wang, Qiwei @@oth@@ Liu, Zhangshuo @@oth@@ Mai, Yiu-Wing @@oth@@ Yu, Zhong-Zhen @@oth@@ |
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Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. 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magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding |
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Magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding |
| abstract |
Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. |
| abstractGer |
Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. |
| abstract_unstemmed |
Highly efficient and lightweight electromagnetic interference (EMI) shielding materials have gained tremendous interests due to the urgent requirement for smart electronic devices and aerospace applications. Herein, we demonstrate a highly efficient hydrazine-induced foaming approach to fabricate magnetic, highly electrically conductive, and lightweight graphene/iron pentacarbonyl (IP) porous films for broadband EMI shielding application. The chitosan introduced effectively optimizes the microcellular structures by improving the interfacial adhesion between graphene sheets and thus enhances the electrical conduction of the porous films with IP flakes. The resultant porous structure not only reduces the density of the films, but also improves the electromagnetic radiation attenuation by repeated scattering of the incident microwave. The presence of magnetic IP flakes endows the porous film with magnetic property and enhanced EMI shielding performance by combining the dielectric and magnetic losses. Thus, the porous film with a small thickness of 0.3 mm and a low density of 0.12 g/cm3 exhibits an excellent broadband EMI shielding performance of >38 dB in the frequency range of 8.2–59.6 GHz with a total bandwidth of 51.4 GHz. These results indicate that the lightweight porous film with outstanding magnetic and electrical properties could be used as multifunctional high-performance EMI shielding materials. |
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Magnetic, electrically conductive and lightweight graphene/iron pentacarbonyl porous films enhanced with chitosan for highly efficient broadband electromagnetic interference shielding |
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Zhang, Hao-Bin Liu, Yafeng Wang, Qiwei Liu, Zhangshuo Mai, Yiu-Wing Yu, Zhong-Zhen |
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