期刊
ADVANCED FUNCTIONAL MATERIALS
卷 24, 期 18, 页码 2620-2629出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201303484
关键词
nanocomposite generators; piezoelectric energy harvesting; potassium sodium niobate; alkaline niobate; copper nanorods
类别
资金
- Basic Science Research Program [NRF-2012R1A2A1A03010415]
- Pioneer Research Center Program - Korea government (MSIP) through the National Research Foundation of Korea (NRF) [NRF-2013M3C1A3042085]
- Ministry of Science, ICT & Future Planning as Global Frontier Project [CISS-2012M3A6A6054187]
- NRF grant by MSIP [NRF-2012R1A1A2A10041947]
- Center for Integrated Smart Sensors
- National Research Foundation of Korea [2012R1A2A1A03010415, 2012R1A1A2A10041947, 2012M3A6A6054193] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The lead-free nanocomposite generator device for high-output energy harvesting using piezoelectric alkaline niobate-based particles (KNLN) and copper (Cu) nanorods filler is reported. To produce the piezoelectric nanocomposite (p-NC), lead-free KNLN particles synthesized using a solid-state method and the Cu nanorods are distributed in a polydimethylsiloxane (PDMS) matrix. The lead-free flexible nanocomposite generator (NCG) made by a simple spin-casting method successfully converts mechanical energy to electricity up to 12 V and 1.2 A. These are higher than previously reported outputs from other lead-free and composite-based nanogenerators. The harvested energy is utilized to directly turn on white light emitting diodes (LEDs) without external circuits and to operate a complex circuital liquid crystal display (LCD). A large-area NCG device (30 cm x 30 cm) is also fabricated using the bar-coating method to obtain maximum output up to 140 V and 8 A (approximate to 0.5 mW). This NCG technology has substantial advantages as a simple, cost-effective, scalable, and high-throughput approach for practical flexible electronics, bio-eco-compatible self-powered systems, and body sensor networks (BSN).
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