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Title: A fully verified theoretical analysis of contact-mode Triboelectric nanogenerators as a wearable power source
Authors: Yang, B
Zeng, W
Peng, ZH
Liu, SR
Chen, K
Tao, XM 
Issue Date: 2016
Source: Advanced energy materials, 2016, v. 6, no. 16, 1600505
Abstract: Harvesting mechanical energy from human activities by triboelectric nanogenerators (TENGs) is an effective approach for sustainable, maintenance-free, and green power source for wireless, portable, and wearable electronics. A theoretical model for contact-mode triboelectric nanogenerators based on the principles of charge conservation and zero loop-voltage is illustrated. Explicit expressions for the output current, voltage, and power are presented for the TENGs with an external load of resistance. Experimental verification is conducted by using a laboratory-fabricated contact-mode TENG made from conducting fabric electrodes and polydimethylsiloxane/graphene oxide composite as the dielectric layer. Excellent agreements of the output voltage, current, and power are demonstrated between the theoretical and experimental results, without any adjustable parameters. The effects of the moving speed on output voltage, current, and power are illustrated in three cases, that is, the motion with constant speed, the sinusoidal motion cycles, and the real walking cycles by human subject. The fully verified theoretical model is a very powerful tool to guide the design of the device structure and selection of materials, and optimization of performance with respect to the application conditions of TENGs.
Keywords: Fiber-based electronic devices
Soft energy harvesters
Triboelectric nanogenerators
Wearable electronics
Publisher: Wiley-VCH
Journal: Advanced energy materials 
ISSN: 1614-6832
DOI: 10.1002/aenm.201600505
Rights: © 2016 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
The following publication Yang, B., Zeng, W., Peng, Z. H., Liu, S. R., Chen, K., & Tao, X. M. (2016). A fully verified theoretical analysis of contact‐mode triboelectric nanogenerators as a wearable power source. Advanced Energy Materials, 6(16), 1600505 is available at https://doi.org/10.1002/aenm.201600505
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