Document Type : Original Reaearch Article
Authors
1
Ph.D. Candidate, Department of Electronics, Faculty of Electrical Engineering, K.N. Toosi University of Technology, Tehran, Iran.
2
Associate Professor, Department of Electronics, Faculty of Electrical Engineering K.N. Toosi University of Technology, Tehran, Iran.
Abstract
Harvesting biomechanical energy and converting it into electrical energy in wearable electronic devices, particularly through skin-contact triboelectric nanogenerators, has garnered significant attention due to their flexibility and broad applications. However, several challenges such as material biocompatibility, minimal friction to prevent skin inflammation, and sensitivity to humidity and temperature hinder the technology's effectiveness. This study investigates the design, simulation, and fabrication of flexible single-electrode triboelectric nanogenerators using sanitary silicone rubber as the triboelectric negative material and E-glass as the triboelectric positive material, replacing skin. Simulation results indicate that the open-circuit voltage varies depending on the positive material, ranging from 96V for skin to 211V for E-glass, while the short-circuit charge ranges from 18pC for skin to 54pC for E-glass. Fabrication results validate these findings, achieving an open-circuit voltage of 200V, short-circuit current of 13.5µA, and maximum output power of 1.85mW at a load resistance of 30MΩ with E-glass. In contrast, skin-based nanogenerators produced an open-circuit voltage of 92V, a short-circuit current of 11.6µA, and maximum output power of 0.69mW at the load resistance of 20MΩ. The E-glass-based nanogenerators exhibit superior performance, stability, and user comfort, making them a promising alternative for energy harvesting in wearable electronics.
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