Issue

Vol. 13 (2021)

Hierarchical Honeycomb-Structured Electret/Triboelectric Nanogenerator for Biomechanical and Morphing Wing Energy Harvesting

https://doi.org/10.1007/s40820-021-00644-0
Kai Tao
Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace, Northwestern Polytechnical University, X’ian 710072, People’s Republic of China
Zhensheng Chen
Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace, Northwestern Polytechnical University, X’ian 710072, People’s Republic of China
Haiping Yi
Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace, Northwestern Polytechnical University, X’ian 710072, People’s Republic of China
Ruirong Zhang
Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace, Northwestern Polytechnical University, X’ian 710072, People’s Republic of China
Qiang Shen
Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace, Northwestern Polytechnical University, X’ian 710072, People’s Republic of China
Jin Wu
State Key Laboratory of Optoelectronic Materials and Technologies, Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
Lihua Tang
Department of Mechanical Engineering, University of Auckland, 20 Symonds Street, Auckland 1010, New Zealand
Kangqi Fan
School of Mechano‑Electronic Engineering, Xidian University, X’ian 710071, People’s Republic of China
Yongqing Fu
Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
Jianmin Miao
School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
Weizheng Yuan
Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace, Northwestern Polytechnical University, X’ian 710072, People’s Republic of China

Corresponding Author: Weizheng Yuan

yuanwz@nwpu.edu.cn

Nano-Micro Letters, Vol. 13 (2021), Article Number: 123

Abstract

Flexible, compact, lightweight and sustainable power sources are indispensable for modern wearable and personal electronics and small-unmanned aerial vehicles (UAVs). Hierarchical honeycomb has the unique merits of compact mesostructures, excellent energy absorption properties and considerable weight to strength ratios. Herein, a honeycomb-inspired triboelectric nanogenerator (h-TENG) is proposed for biomechanical and UAV morphing wing energy harvesting based on contact triboelectrification wavy surface of cellular honeycomb structure. The wavy surface comprises a multilayered thin film structure (combining polyethylene terephthalate, silver nanowires and fluorinated ethylene propylene) fabricated through high-temperature thermoplastic molding and wafer-level bonding process. With superior synchronization of large amounts of energy generation units with honeycomb cells, the manufactured h-TENG prototype produces the maximum instantaneous open-circuit voltage, short-circuit current and output power of 1207 V, 68.5 μA and 12.4 mW, respectively, corresponding to a remarkable peak power density of 0.275 mW cm−3 (or 2.48 mW g−1) under hand pressing excitations. Attributed to the excellent elastic property of self-rebounding honeycomb structure, the flexible and transparent h-TENG can be easily pressed, bent and integrated into shoes for real-time insole plantar pressure mapping. The lightweight and compact h-TENG is further installed into a morphing wing of small UAVs for efficiently converting the flapping energy of ailerons into electricity for the first time. This research demonstrates this new conceptualizing single h-TENG device's versatility and viability for broad-range real-world application scenarios.


Highlights:


1 Create a hierarchical honeycomb-inspired triboelectric nanogenerator (TENG) with excellent transparency, compactness, lightweight and deformability.
2 Amplify capacitance variation by dividing large hollow space into numerous energy generation units with porous honeycomb architecture.
3 Demonstrate self-powered insole plantar pressure mapping applications by the self-sustained elastic nature of the h-TENG device.
4 Integrate the h-TENG into the morphing wing of small-unmanned aerial vehicles for converting flapping motions into electricity for the first time.

Keywords

Honeycomb-inspired structure Morphing wing energy harvesting Electret power generation Triboelectric nanogenerator Self-powered insole pressure mapping
Tao, Kai, Zhensheng Chen, Haiping Yi, Ruirong Zhang, Qiang Shen, Jin Wu, Lihua Tang, Kangqi Fan, Yongqing Fu, Jianmin Miao, and Weizheng Yuan. 2021. “Hierarchical Honeycomb-Structured Electret/Triboelectric Nanogenerator for Biomechanical and Morphing Wing Energy Harvesting”. Nano-Micro Letters 13 (May):123. https://doi.org/10.1007/s40820-021-00644-0.
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