3D porous graphene films with large-area in-plane exterior skins
Construction of macroscopic three-dimensional (3D) architectures of graphene is crucial to harness the advantageous properties of planar 2D graphene and to enable integration to many conventional and novel applications. Ideally, the 3D structure of graphene should be free of defects, covalently inte...
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sg-ntu-dr.10356-1560862022-04-09T20:11:39Z 3D porous graphene films with large-area in-plane exterior skins Tay, Roland Yingjie Li, Hongling Ng, Zhi Kai Tsang, Siu Hon Gao, Wei Teo, Edwin Hang Tong School of Electrical and Electronic Engineering School of Materials Science and Engineering Temasek Laboratories @ NTU Engineering::Electrical and electronic engineering Engineering::Materials Chemical Vapor Deposition Electromagnetic Interference Shielding Construction of macroscopic three-dimensional (3D) architectures of graphene is crucial to harness the advantageous properties of planar 2D graphene and to enable integration to many conventional and novel applications. Ideally, the 3D structure of graphene should be free of defects, covalently interconnected and can be produced at large-scale. Among various assembly techniques, fabrication using chemical vapor deposition (CVD) enables the production of high-quality graphene where selection of template is key that determines its consequent crystalline quality and structural morphology. Herein, we present a new method to synthesize high-quality porous graphene film by incorporating an in-situ reduction-oxidation cycling treatment to generate micrometer-sized pores on commercial Ni foil using an all-CVD process route. Owing to the unique morphological features of the modified Ni template, the graphene film exhibits a holey surface with large-area exterior skin coverage of >94% and many interconnected ligaments within its porous interior. This extraordinary configuration give rise to superior in-plane electrical conductivity despite its low density. In comparison to state-of-the-art materials for electromagnetic interference shielding, this porous graphene film is among the best performing materials with a specific shielding effectiveness of >550 dB cm3 g-1 and absolute effectiveness of >220,000 dB cm2 g-1. Ministry of Education (MOE) Nanyang Technological University Submitted/Accepted version 2022-04-05T07:10:48Z 2022-04-05T07:10:48Z 2022 Journal Article Tay, R. Y., Li, H., Ng, Z. K., Tsang, S. H., Gao, W. & Teo, E. H. T. (2022). 3D porous graphene films with large-area in-plane exterior skins. Advanced Materials Interfaces, 9(6), 2101938-. https://dx.doi.org/10.1002/admi.202101938 2196-7350 https://hdl.handle.net/10356/156086 10.1002/admi.202101938 6 9 2101938 en Advanced Materials Interfaces This is the peer reviewed version of the following article: Tay, R. Y., Li, H., Ng, Z. K., Tsang, S. H., Gao, W. & Teo, E. H. T. (2022). 3D porous graphene films with large-area in-plane exterior skins. Advanced Materials Interfaces, 9(6), 2101938-, which has been published in final form at https://doi.org/10.1002/admi.202101938. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf application/pdf |
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Engineering::Electrical and electronic engineering Engineering::Materials Chemical Vapor Deposition Electromagnetic Interference Shielding Tay, Roland Yingjie Li, Hongling Ng, Zhi Kai Tsang, Siu Hon Gao, Wei Teo, Edwin Hang Tong 3D porous graphene films with large-area in-plane exterior skins |
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Construction of macroscopic three-dimensional (3D) architectures of graphene is crucial to harness the advantageous properties of planar 2D graphene and to enable integration to many conventional and novel applications. Ideally, the 3D structure of graphene should be free of defects, covalently interconnected and can be produced at large-scale. Among various assembly techniques, fabrication using chemical vapor deposition (CVD) enables the production of high-quality graphene where selection of template is key that determines its consequent crystalline quality and structural morphology. Herein, we present a new method to synthesize high-quality porous graphene film by incorporating an in-situ reduction-oxidation cycling treatment to generate micrometer-sized pores on commercial Ni foil using an all-CVD process route. Owing to the unique morphological features of the modified Ni template, the graphene film exhibits a holey surface with large-area exterior skin coverage of >94% and many interconnected ligaments within its porous interior. This extraordinary configuration give rise to superior in-plane electrical conductivity despite its low density. In comparison to state-of-the-art materials for electromagnetic interference shielding, this porous graphene film is among the best performing materials with a specific shielding effectiveness of >550 dB cm3 g-1 and absolute effectiveness of >220,000 dB cm2 g-1. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Tay, Roland Yingjie Li, Hongling Ng, Zhi Kai Tsang, Siu Hon Gao, Wei Teo, Edwin Hang Tong |
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Article |
author |
Tay, Roland Yingjie Li, Hongling Ng, Zhi Kai Tsang, Siu Hon Gao, Wei Teo, Edwin Hang Tong |
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Tay, Roland Yingjie |
title |
3D porous graphene films with large-area in-plane exterior skins |
title_short |
3D porous graphene films with large-area in-plane exterior skins |
title_full |
3D porous graphene films with large-area in-plane exterior skins |
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3D porous graphene films with large-area in-plane exterior skins |
title_full_unstemmed |
3D porous graphene films with large-area in-plane exterior skins |
title_sort |
3d porous graphene films with large-area in-plane exterior skins |
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2022 |
url |
https://hdl.handle.net/10356/156086 |
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1731235777967292416 |