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Robust, breathable, and chemical-resistant polytetrafluoroethylene (PTFE) films achieved by novel in-situ fibrillation strategy for high-performance triboelectric nanogenerators
Nano Research ( IF 9.5 ) Pub Date : 2023-10-02 , DOI: 10.1007/s12274-023-6147-3
Jialong Chai , Guilong Wang , Jinchuan Zhao , Guizhen Wang , Chao Wei , Aimin Zhang , Guoqun Zhao

In the era of advanced wearable electronic devices, the triboelectric nanogenerators (TENGs) as energy harvesting and self-powered sensing units hold great promise. Selecting appropriate triboelectric material is the crucial factor to optimize the performance of TENG, while polytetrafluoroethylene (PTFE) stands out as a highly versatile option among the various materials. In this study, we present an ultrafine nanofibrous PTFE (NF-PTFE) films prepared by novel in-situ fibrillation strategy as the triboelectric material in TENG devices. The innovative processing methodology facilely addresses the dilemma between high porosity and fine pore size of traditional porous PTFE films, meanwhile achieves exceptional mechanical strength, hydrophobicity, air permeability, and chemical resistance of the films. With the integration of nanofibrous PTFE films into contact-separation mode TENG and droplet-based TENG, these devices realize the peak electrical output of 131 V/10.8 µA and 54 V/14 µA with great durability, which surpass the performance of TENGs using traditional expanded PTFE films. Furthermore, a smart glove capable of recognizing hand gestures is proposed, which demonstrates the versatility, flexibility, and practicality of this material for potential use in smart devices. This reported NF-PTFE film provides insights for the design of high-performance TENG device for advanced wearable electrical applications.



中文翻译:

通过新型原位纤化策略实现高性能摩擦纳米发电机的坚固、透气且耐化学腐蚀的聚四氟乙烯(PTFE)薄膜

在先进可穿戴电子设备时代,摩擦纳米发电机(TENG)作为能量收集和自供电传感单元具有广阔的前景。选择合适的摩擦电材料是优化 TENG 性能的关键因素,而聚四氟乙烯 (PTFE) 在各种材料中脱颖而出,是一种高度通用的选择。在这项研究中,我们提出了一种通过新型原位制备的超细纳米纤维 PTFE (NF-PTFE) 薄膜。纤维颤动策略作为 TENG 器件中的摩擦电材料。创新的加工方法轻松解决了传统多孔PTFE薄膜的高孔隙率和细孔径之间的困境,同时实现了薄膜优异的机械强度、疏水性、透气性和耐化学性。通过将纳米纤维 PTFE 薄膜集成到接触分离模式 TENG 和基于液滴的 TENG,这些器件实现了 131 V/10.8 µA 和 54 V/14 µA 的峰值电输出,并且具有出色的耐用性,超越了使用传统 TENG 的性能膨体聚四氟乙烯薄膜。此外,还提出了一种能够识别手势的智能手套,这证明了这种材料在智能设备中的潜在用途的多功能性、灵活性和实用性。

更新日期:2023-10-02
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