New approach to improve the energy density of hybrid electret-dielectric elastomer generators

Clara Lagomarsini; Claire Jean-Mistral; Stephane Monfray; Alain Sylvestre

doi:10.1117/12.2259933

17 April 2017 New approach to improve the energy density of hybrid electret-dielectric elastomer generators

Clara Lagomarsini, Claire Jean-Mistral, Stephane Monfray, Alain Sylvestre

Proceedings Volume 10163, Electroactive Polymer Actuators and Devices (EAPAD) 2017; 101632C (2017) https://doi.org/10.1117/12.2259933
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

Harvesting human kinetic energy to produce electricity is an attractive alternative to batteries for applications in wearable electronic devices and smart textile. Dielectric elastomers generators (DEGs) represent one of the most promising technologies for these applications. Nevertheless, one of the main disadvantages of these structures is the need of an external polarization source to perform the energetic cycle. In the present work, a hybrid electret-dielectric elastomer generator in DEG mode is presented. In this configuration, the electret material is used as polarization source of a classical DEG, i.e. an electrostatic generator based on electrical capacitance variation. The electrical energy output in this mode (1.06mJ.g⁻¹) could be higher than the one obtained using a classical electret mode (0.55mJ.g⁻¹), i.e. charges recombination. In this paper, the operation principle of the hybrid generator will be fully described and the design rules for the realization of the prototype will be presented. The experimental data obtained from the prototype will be compared to the results of FEM simulations.

Conference Presentation

Citation Download Citation

Clara Lagomarsini, Claire Jean-Mistral, Stephane Monfray, and Alain Sylvestre "New approach to improve the energy density of hybrid electret-dielectric elastomer generators", Proc. SPIE 10163, Electroactive Polymer Actuators and Devices (EAPAD) 2017, 101632C (17 April 2017); https://doi.org/10.1117/12.2259933

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