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DOI	10.1039/c9ee01785b
	The large piezoelectricity and high power density of a 3D-printed multilayer copolymer in a rugby ball-structured mechanical energy harvester
	Yuan X.; Gao X.; Yang J.; Shen X.; Li Z.; You S.; Wang Z.; Dong S.
发表日期	2020
ISSN	17545692
起始页码	152
结束页码	161
卷号	13 期号:1
英文摘要	Piezoelectric polymers are characterized by their flexibility and ease of processing into shapes, however, their piezoelectric coefficients, such as d33, are quite low (∼24 pC N-1). Here we report a 3D-printed multilayer β-phase PVDF-TrFE copolymer which does not require high temperature annealing or complicated transfer processes and exhibits a much higher effective piezoelectric coefficient (d33 ∼ 130 pC N-1 for six 10 μm layers). In order to confirm its high power density, a rugby ball-shaped energy harvester, which operates via a flextensional mechanism, was prepared using the multilayer copolymer. The experimental results show that it can produce a peak voltage of ∼88.62 Vpp and a current of 353 μA, which are 2.2 and 10 times those of a single-layer PVDF-TrFE harvester, respectively, under a pressure of 0.046 MPa. Notably, its peak output power density was as high as 16.4 mW cm-2 (according to Ppeak = (VpeakIshort)/2); while at a load of 568 kΩ, it was still 5.81 mW cm-2. The proposed copolymer processing method and flextensional mechanism in a rugby ball configuration show great potential for future micro-energy development in flexible, wearable electronic devices and wireless sensor networks. © 2020 The Royal Society of Chemistry.
英文关键词	Crystallography; Energy harvesting; Multilayers; Piezoelectricity; Processing; Sports; Wireless sensor networks; Electronic device; High power density; High-temperature annealing; Mechanical energies; Peak output power; Piezoelectric coefficient; Piezoelectric polymers; Processing method; 3D printers; equipment; high temperature; piezoelectricity; polymer
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/189737
作者单位	Department of Materials Science and Engineering College of Engineering, Peking University, Beijing, China; Beijing Key Laboratory for Magnetoelectric Materials and Devices (BKL-MEMD), China
推荐引用方式 GB/T 7714	Yuan X.,Gao X.,Yang J.,et al. The large piezoelectricity and high power density of a 3D-printed multilayer copolymer in a rugby ball-structured mechanical energy harvester[J],2020,13(1).
APA	Yuan X..,Gao X..,Yang J..,Shen X..,Li Z..,...&Dong S..(2020).The large piezoelectricity and high power density of a 3D-printed multilayer copolymer in a rugby ball-structured mechanical energy harvester.Energy & Environmental Science,13(1).
MLA	Yuan X.,et al."The large piezoelectricity and high power density of a 3D-printed multilayer copolymer in a rugby ball-structured mechanical energy harvester".Energy & Environmental Science 13.1(2020).