Issue

Vol. 13 (2021)

Hybrid Triboelectric-Electromagnetic Nanogenerators for Mechanical Energy Harvesting: A Review

https://doi.org/10.1007/s40820-021-00713-4
João V. Vidal
Department of Physics and CICECO – Aveiro Institute of Materials, University of Aveiro, 3810‑193 Aveiro, Portugal
Vladislav Slabov
Department of Physics and CICECO – Aveiro Institute of Materials, University of Aveiro, 3810‑193 Aveiro, Portugal
Andrei L. Kholkin
Department of Physics and CICECO – Aveiro Institute of Materials, University of Aveiro, 3810‑193 Aveiro, Portugal
Marco P. Soares dos Santos
Department of Mechanical Engineering, Centre for Mechanical Technology and Automation (TEMA), University of Aveiro, 3810‑193 Aveiro, Portugal

Corresponding Author: Andrei L. Kholkin

kholkin@ua.pt

Nano-Micro Letters, Vol. 13 (2021), Article Number: 199

Abstract

Motion-driven electromagnetic-triboelectric energy generators (E-TENGs) hold a great potential to provide higher voltages, higher currents and wider operating bandwidths than both electromagnetic and triboelectric generators standing alone. Therefore, they are promising solutions to autonomously supply a broad range of highly sophisticated devices. This paper provides a thorough review focused on major recent breakthroughs in the area of electromagnetic-triboelectric vibrational energy harvesting. A detailed analysis was conducted on various architectures including rotational, pendulum, linear, sliding, cantilever, flexible blade, multidimensional and magnetoelectric, and the following hybrid technologies. They enable highly efficient ways to harvest electric energy from many forms of vibrational, rotational, biomechanical, wave, wind and thermal sources, among others. Open-circuit voltages up to 75 V, short-circuit currents up to 60 mA and instantaneous power up to 144 mW were already achieved by these nanogenerators. Their transduction mechanisms, including proposed models to make intelligible the involved physical phenomena, are also overviewed here. A comprehensive analysis was performed to compare their respective construction designs, external excitations and electric outputs. The results highlight the potential of hybrid E-TENGs to convert unused mechanical motion into electric energy for both large- and small-scale applications. Finally, this paper proposes future research directions toward optimization of energy conversion efficiency, power management, durability and stability, packaging, energy storage, operation input, research of transduction mechanisms, quantitative standardization, system integration, miniaturization and multi-energy hybrid cells.


Highlights:


1 An up-to-date review of hybrid triboelectric-electromagnetic nanogenerators is provided.
2 Rotational, pendulum, linear, sliding, cantilever, flexible blade, multidimensional, and magnetoelectric hybrid technologies are thoroughly analyzed.
3 Promising results highlight the potential of these hybrid technologies for both small-scale and large-scale powering.

Keywords

E-TENG Hybrid triboelectric-electromagnetic Nanogenerators Energy harvesting
Vidal, João V., Vladislav Slabov, Andrei L. Kholkin, and Marco P. Soares dos Santos. 2021. “Hybrid Triboelectric-Electromagnetic Nanogenerators for Mechanical Energy Harvesting: A Review”. Nano-Micro Letters 13 (September):199. https://doi.org/10.1007/s40820-021-00713-4.
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