期刊
NANO ENERGY
卷 75, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2020.104992
关键词
Energy harvester; Piezoelectric; Hot pressing; Fabric; Adhesion strength
类别
资金
- KAIST High Risk High Return Project (HRHRP), Basic Science Research Program through the NRF Korea - Ministry of Science and ICT [NRF-2018R1A2B6002194, 2019R1A2C4070690]
- Wearable Platform Materials Technology Center - National Research Foundation of Korea (NRF) Grant of the Korean Government (MSIT) [NRF-2016R1A5A1009926]
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2020R1A2C201207811]
- KAIST
- National Research Foundation of Korea [N11200026, 4120200313733, 5199991614244, N11200025] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Fabric-based wearable electronics are becoming more important in the fourth industrial revolution (4IR) era due to their connectivity, wearability, comfort, and durability. Conventional fabric-based wearable electronics have been demonstrated by several researchers, but still need complex methods or additional supports to be fabricated and sewed in clothing. Herein, a cost-effective, high throughput, and strongly integrated fabric-based wearable piezoelectric energy harvester (fabric-WPEH) is demonstrated. The fabric-WPEH has a heterostructure of a ferroelectric polymer, poly(vinylidene fluoride-co-trifluoroethylene) [P(VDF-TrFE)] and two conductive fabrics via simple fabrication of tape casting and hot pressing. Our fabrication process would enable the direct application of the unit device to general garments using hot pressing as graphic patches can be attached to the garments by heat press. Simulation and experimental analysis demonstrate fully bendable, compact and concave interfaces and a high piezoelectric d(33) coefficient (-32.0 pC N-1) of the P(VDF-TrFE) layer. The fabric-WPEH generates piezoelectric output signals from human motions (pressing, bending) and from quantitative force test machine pressing. Furthermore, a record high interfacial adhesion strength (22 N cm(-1)) between the P(VDF-TrFE) layer and fabric layers has been measured by surface and interfacial cutting analysis system (SAICAS) for the first time in the field of fabric-based wearable piezoelectric electronics.
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