Stretchable polyurethane composite foam triboelectric nanogenerator with tunable microwave absorption properties at elevated temperature

Zheng, J; Wei, X; Li, Y; Dong, W; Li, X; E, S; Wen, J

Stretchable polyurethane composite foam triboelectric nanogenerator with tunable microwave absorption properties at elevated temperature

Zheng, J Wei, X Li, Y

Dong, W Li, X E, S Wen, J

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Nano Energy, 2021, 89, (Part B), pp. 1-12
Issue Date:: 2021-07-30

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Field	Value	Language
dc.contributor.author	Zheng, J
dc.contributor.author	Wei, X
dc.contributor.author	Li, Y https://orcid.org/0000-0002-6720-8493
dc.contributor.author	Dong, W
dc.contributor.author	Li, X
dc.contributor.author	E, S
dc.contributor.author	Wen, J
dc.date.accessioned	2022-05-24T01:47:52Z
dc.date.available	2022-05-24T01:47:52Z
dc.date.issued	2021-07-30
dc.identifier.citation	Nano Energy, 2021, 89, (Part B), pp. 1-12
dc.identifier.issn	2211-2855
dc.identifier.issn	2211-3282
dc.identifier.uri	http://hdl.handle.net/10453/157664
dc.description.abstract	Nowadays, the integration of multiple functions such as harvesting clean energy and electromagnetic protection into single material has attracted great interest. Herein, a stretchable composite foam-based triboelectric nanogenerator (CF-TENG) with tunable microwave absorption (MA) capacity was developed by assembling self foaming polyurethane (PU), tadpole-like CNTs@Fe3O4 nanoparticles (NPs) and conductive wires. The CF-TENG with a volume of ∅120 mm × 3 mm can generate a maximum output power of 147.9 μW, corresponding to a power density of 1.3 µW/cm2 and easily illuminate 35 commercial light-emitting diodes (LEDs) under periodi cally vertical contact and separation mode, which exhibits high efficiency in energy-harvesting. Besides, the excellent MA properties and relevant mechanisms at elevated temperatures from 253 K to 333 K were investi gated in detail. With an ultralow filler loading of 15 wt%, the minimum reflection loss (RLm) value at 253 K could reach − 68.5 dB at 10.97 GHz and effective absorption bandwidth (EAB) below − 10 dB achieved 4.37 GHz at a thickness of 2.55 mm. Temperature rise would be conducive to broadening the EAB and shifting the matching frequency towards a higher frequency band. Such a remarkable MA performance originated mainly from the dielectric-magnetic dual loss, well-matched impedance, and multiple reflections. To this end, this CF-TENG with electromagnetic protection property combining the ability to scavenge mechanical energy from ambient vibra tions opens a new set of prospective applications in wearable electronics and the next-generation energy systems under invisible harsh environments.
dc.language	English
dc.publisher	Elsevier
dc.relation.ispartof	Nano Energy
dc.relation.isbasedon	10.1016/j.nanoen.2021.106397
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0303 Macromolecular and Materials Chemistry, 0912 Materials Engineering, 1007 Nanotechnology
dc.title	Stretchable polyurethane composite foam triboelectric nanogenerator with tunable microwave absorption properties at elevated temperature
dc.type	Journal Article
utslib.citation.volume	89
utslib.for	0303 Macromolecular and Materials Chemistry
utslib.for	0912 Materials Engineering
utslib.for	1007 Nanotechnology
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access	*
pubs.consider-herdc	true
dc.date.updated	2022-05-24T01:45:59Z
pubs.issue	Part B
pubs.publication-status	Accepted
pubs.volume	89
utslib.citation.issue	Part B

Abstract:

Nowadays, the integration of multiple functions such as harvesting clean energy and electromagnetic protection into single material has attracted great interest. Herein, a stretchable composite foam-based triboelectric nanogenerator (CF-TENG) with tunable microwave absorption (MA) capacity was developed by assembling self foaming polyurethane (PU), tadpole-like CNTs@Fe3O4 nanoparticles (NPs) and conductive wires. The CF-TENG with a volume of ∅120 mm × 3 mm can generate a maximum output power of 147.9 μW, corresponding to a power density of 1.3 µW/cm2 and easily illuminate 35 commercial light-emitting diodes (LEDs) under periodi cally vertical contact and separation mode, which exhibits high efficiency in energy-harvesting. Besides, the excellent MA properties and relevant mechanisms at elevated temperatures from 253 K to 333 K were investi gated in detail. With an ultralow filler loading of 15 wt%, the minimum reflection loss (RLm) value at 253 K could reach − 68.5 dB at 10.97 GHz and effective absorption bandwidth (EAB) below − 10 dB achieved 4.37 GHz at a thickness of 2.55 mm. Temperature rise would be conducive to broadening the EAB and shifting the matching frequency towards a higher frequency band. Such a remarkable MA performance originated mainly from the dielectric-magnetic dual loss, well-matched impedance, and multiple reflections. To this end, this CF-TENG with electromagnetic protection property combining the ability to scavenge mechanical energy from ambient vibra tions opens a new set of prospective applications in wearable electronics and the next-generation energy systems under invisible harsh environments.

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