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Energy Harvesting From Piezoelectric Materials Fully Integrated in Footwear

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5 Author(s)
J. G. Rocha ; Department of Industrial Electronics, University of Minho, Azurem Campus, Guimarães, Portugal ; L. M. Goncalves ; P. F. Rocha ; M. P. Silva
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In the last few years, there has been an increasing demand for low-power and portable-energy sources due to the development and mass consumption of portable electronic devices. Furthermore, the portable-energy sources must be associated with environmental issues and imposed regulations. These demands support research in the areas of portable-energy generation methods. In this scope, piezoelectric materials become a strong candidate for energy generation and storage in future applications. This paper describes the use of piezoelectric polymers in order to harvest energy from people walking and the fabrication of a shoe capable of generating and accumulating the energy. In this scope, electroactive ??-polyvinylidene fluoride used as energy harvesting element was introduced into a bicolor sole prepared by injection, together with the electronics needed to increase energy transfer and storage efficiency. An electrostatic generator was also included in order to increase energy harvesting.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:57 ,  Issue: 3 )