气候变化领域集成服务门户(CCPortal): A triboelectric generator based on self-poled Nylon-11 nanowires fabricated by gas-flow assisted template wetting

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DOI	10.1039/c7ee01292f
	A triboelectric generator based on self-poled Nylon-11 nanowires fabricated by gas-flow assisted template wetting
	Choi Y.S.; Jing Q.; Datta A.; Boughey C.; Kar-Narayan S.
发表日期	2017
ISSN	17545692
起始页码	2180
结束页码	2189
卷号	10 期号:10
英文摘要	Triboelectric generators have emerged as potential candidates for mechanical energy harvesting, relying on motion-generated surface charge transfer between materials with different electron affinities. In this regard, synthetic organic materials with strong electron-donating tendencies are far less common than their electron-accepting counterparts. Nylons are notable exceptions, with odd-numbered Nylons such as Nylon-11, exhibiting electric polarisation that could further enhance the surface charge density crucial to triboelectric generator performance. However, the fabrication of Nylon-11 in the required polarised δ′-phase typically requires extremely rapid crystallisation, such as melt-quenching, as well as "poling" via mechanical stretching and/or large electric fields for dipolar alignment. Here, we propose an alternative one-step, near room-temperature fabrication method, namely gas-flow assisted nano-template (GANT) infiltration, by which highly crystalline "self-poled" δ′-phase Nylon-11 nanowires are grown from solution within nanoporous anodised aluminium oxide (AAO) templates. Our gas-flow assisted method allows for controlled crystallisation of the δ′-phase of Nylon-11 through rapid solvent evaporation and an artificially generated extreme temperature gradient within the nanopores of the AAO template, as accurately predicted by finite-element simulations. Furthermore, preferential crystal orientation originating from template-induced nano-confinement effects leads to self-poled δ′-phase Nylon-11 nanowires with higher surface charge distribution than melt-quenched Nylon-11 films, as observed by Kelvin probe force microscopy (KPFM). Correspondingly, a triboelectric nanogenerator (TENG) device based on as-grown templated Nylon-11 nanowires fabricated via GANT infiltration showed a ten-fold increase in output power density as compared to an aluminium-based triboelectric generator, when subjected to identical mechanical excitations. © The Royal Society of Chemistry.
英文关键词	Aluminum; Charge transfer; Crystal orientation; Electric fields; Electric generators; Electrostatic generators; Energy harvesting; Fabrication; Finite element method; Flow of gases; Nanowires; Rayon; Surface charge; Triboelectricity; Wetting; Electron donating tendency; Finite element simulations; Grown from solutions; Kelvin probe force microscopy; Mechanical excitations; Mechanical stretching; Near room temperature; Tribo-electric generator; Polyamides; aluminum oxide; crystal; crystallization; evaporation; finite element method; gas flow; infiltration; performance assessment; polarization; preferred orientation; solvent; temperature gradient; wetting
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190396
作者单位	Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, United Kingdom
推荐引用方式 GB/T 7714	Choi Y.S.,Jing Q.,Datta A.,et al. A triboelectric generator based on self-poled Nylon-11 nanowires fabricated by gas-flow assisted template wetting[J],2017,10(10).
APA	Choi Y.S.,Jing Q.,Datta A.,Boughey C.,&Kar-Narayan S..(2017).A triboelectric generator based on self-poled Nylon-11 nanowires fabricated by gas-flow assisted template wetting.Energy & Environmental Science,10(10).
MLA	Choi Y.S.,et al."A triboelectric generator based on self-poled Nylon-11 nanowires fabricated by gas-flow assisted template wetting".Energy & Environmental Science 10.10(2017).