Climate Change Data Portal
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). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。