Article

Article

Curr. Appl. Phys. 2024; 66: 49-59

Published online October 31, 2024 https://doi.org/10.1016/j.cap.2024.06.015

Copyright © The Korean Physical Society.

Enhancing energy harvesting for low-power electronics: A study on the impact of electrode number and freestanding layer in rotary triboelectric nanogenerator

Shahriyari A.; GolshanBafghi Z.; Yousefizad M.; Manavizadeh N.; Pourfarzad H.; Ahaninpajooh F.; Samoodi S.

Nanostructured-Electronic Devices Laboratory, Faculty of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran; Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran; Islamic Azad University, East Tehran Branch, Tehran, Iran; Department of Mechanical Engineering, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

Abstract

Herein, the rotary triboelectric nanogenerator (R-TENG) with a modified structure is simulated and fabricated to investigate the effect of changes on the geometric structure experimentally. The R-TENGs were fabricated using cost-effective and easily accessible dry-film lithography based on the PCB approach. This process which is explained step-by-step in detail in this paper, provides uniform electrode layers without using high-tech instruments, resulting in enhanced fabrication speed and electrical performance. R-TENGs with varying electrode and PTFE sector counts (32/16, 16/8, and 8/4) were fabricated and analyzed. At 1000 rpm, the output power of R-TENGs with 8, 16, and 32 electrodes demonstrated escalating output power with increasing electrode numbers: 6.82, 19.52, and 30.64 Wm-2, respectively. Simulation results corroborated the experimental findings, confirming that more electrodes and freestanding sectors yield superior power density and electrical generation. The 32-electrode, 16-sector R-TENG outperformed its counterparts, suggesting that strategic design alterations can significantly optimize energy harvesting in R-TENGs. © 2024 Korean Physical Society

Keywords: Energy harvesting, Freestanding, Geometric modification, PTFE, Rotation, Triboelectric nanogenerator

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