Work

A Woodpecker‐Inspired Self‐Excited Vibration Mechanism for Enhancing the Power of Triboelectric Nanogenerators

Year: 2025

Type: article

Abstract: While the instantaneous power of triboelectric nanogenerators (TENGs) has significantly increased, the average power remains unsatisfactory. Achieving a continuous and stable output remains a significant challenge. Herein, a self‐excited vibration TENG inspired by woodpeckers is proposed. This structure converts gravitational potential energy into the continuous vibration of a cantilever beam. A dynamic simulation model of the system is established, and the influence of different structural parameters on the motion characteristics and electrical performance is discussed. Meanwhile, the experimental results indicate that the accelerated motion (approximate free‐fall motion) is transformed into approximately uniform velocity motion. For a 3 cm 2 TENG, the instantaneous power density reaches 2.03 W m −2 , and the average power is 127% higher than that of the conventional cantilever beam mode. The proposed self‐excited vibration mechanism is a promising approach for enhancing the average power and operational duration of TENGs. It shows great potential in fluid energy harvesting.

Source: Energy & environment materials

DOI: 10.1002/eem2.70106

Authors: Xie Xie, Chuanfu Xin, Fan Shen, Zhongjie Li, Yan Peng

Institution: Shanghai University

Language: English

Topic: Advanced Sensor and Energy Harvesting Materials

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $3,000