Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28068
Title: Highly durable all-fiber nanogenerator for mechanical energy harvesting
Authors: Zeng, W
Tao, XM 
Chen, S
Shang, S 
Chan, HLW 
Choy, SH
Issue Date: 2013
Publisher: Royal Society of Chemistry
Source: Energy and environmental science, 2013, v. 6, no. 9, p. 2631-2638 How to cite?
Journal: Energy and environmental science 
Abstract: Future generations of wearable electronic systems and mobile communication place a great demand for harvesting energy from ambient environments or human movements. Soft fiber-based electric power generators are attractive in meeting the requirements of wearable devices because of efficient energy conversion performance, high durability and comfort. In this paper, we present a novel all-fiber wearable electric power nanogenerator, which consists of a PVDF-NaNbO3 nanofiber nonwoven fabric as an active piezoelectric component, and an elastic conducting knitted fabric, made from segmented polyurethane and silver coated polyamide multifilament yarns, as the top and bottom electrodes. The non-uniform deformation distribution in a compressed nanogenerator device determines the complex operating modes in the piezoelectric nanofiber nonwoven fabric. The nanogenerator consistently produces a peak open-circuit voltage of 3.4 V and a peak current of 4.4 μA in cyclic compression tests at 1 Hz and a maximum pressure of 0.2 MPa, which is comparable to normal human walking motion. More importantly, the all-fiber nanogenerator retains its performance after 1 000 000 compression cycles, demonstrating great promise as a wearable energy harvester that converts the mechanical energy of human movement into electricity.
URI: http://hdl.handle.net/10397/28068
ISSN: 1754-5692
EISSN: 1754-5706
DOI: 10.1039/c3ee41063c
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