Liquid metal based triboelectric nanogenerator with excellent electrothermal and safeguarding performance towards intelligent plaster
Publication Name
Nano Energy
Abstract
Polymer-based self-powered wearable sensing devices are easily destroyed under harsh mechanical shocks which largely restricts the development of smart electronic device. Herein, a versatile liquid metal based triboelectric nanogenerator (LM-TENG) device was developed by integrating the shear stiffening elastomer (SSE) with liquid metal (LM) and electrothermal aluminum foil. Based on the electrostatic induction effect, LM-TENG showed the good capacity of harvesting energy. The output voltage and power of the LM-TENG reached to 22.29 V and 55.16 µW with 9 MΩ load resistance at the force and frequency of 40 N and 15 Hz. Besides, LM-TENG demonstrated excellent electrothermal performance by efficiently reaching 69.02 ℃ with the applied voltage of 1.5 V. Additionally, LM-TENG displayed safeguarding performance under quasi-static and dynamic damage by effectively decreasing the impact force from 2.86 to 0.72 kN, endowing the device with excellent anti-impact from sharp objects penetration loading. Moreover, the utility of LM-TENG as intelligent medical plaster with joule-heating, controllable stiffness, self-powering sensing and anti-impact performance was further studied, providing a new strategy for designing multifunctional sensor, and paving the way for intelligent wearable electronics, personal healthcare and safeguards in the future.
Open Access Status
This publication is not available as open access
Volume
109
Article Number
108280
Funding Number
DP230100823
Funding Sponsor
Australian Research Council