期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 14, 页码 16876-16886出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c00983
关键词
triboelectric devices; smart textiles; energy harvesting; electrospinning; triboelectric yarn
资金
- European Research Council [ERC-2014-STG-639526]
- EPSRC Cambridge NanoDTC [EP/G037221/1]
- Sonata Bis 5 project by National Science Centre [2015/18/E/ST5/00230]
- STSM Grant from COST Action [CA17107]
- European Commission
- POWER 3.5 project by European Union [POWR.03.05.00-00-Z307/17-00]
- Emmanuel College (University of Cambridge)
The developed triboelectric yarn with PVDF-coated CNT core demonstrates excellent energy harvesting capabilities, improved durability, and washing resistance, meeting industry standards.
Triboelectric generators are excellent candidates for smart textiles applications due to their ability to convert mechanical energy into electrical energy. Such devices can be manufactured into yarns by coating a conductive core with a triboelectric material, but current triboelectric yarns lack the durability and washing resistance required for textile-based applications. In this work, we develop a unique triboelectric yarn comprising a conducting carbon nanotube (CNT) yarn electrode coated with poly(vinylidene fluoride) (PVDF) fibers deposited by a customized electrospinning process. We show that the electrospun PVDF fibers adhere extremely well to the CNT core, producing a uniform and stable triboelectric coating. The PVDF-CNT coaxial yarn exhibits remarkable triboelectric energy harvesting during fatigue testing with a 33% power output improvement and a peak power density of 20.7 mu W cm(-2) after 200 000 fatigue cycles. This is potentially due to an increase in the active surface area of the PVDF fiber coating upon repeated contact. Furthermore, our triboelectric yarn meets standard textile industry benchmarks for both abrasion and washing by retaining functionality over 1200 rubbing cycles and 10 washing cycles. We demonstrate the energy harvesting and motion sensing capabilities of our triboelectric yarn in prototype textile-based applications, thereby highlighting its applicability to smart textiles.
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