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Flexible High Temperature Stable Hydrogel Based Triboelectric Nanogenerator for Structural Health Monitoring and Deep
Ritu1,2,3, Rahul Mitra2,3, Peter C Sherrell4
1Manufacturing Science and Instrumentation (MSI) Division, CSIR-Central Scientific Instruments Organisation, Chandigarh, Chandigarh, 160030, India.
Small (Weinheim an Der Bergstrasse, Germany)
|June 4, 2025
Summary
This study presents a high-temperature stable triboelectric nanogenerator (TENG) using a PDMS-hydrogel nanocomposite. This advanced TENG harvests vibrational energy in industrial settings and monitors human motion in extreme environments.
Area of Science:
- Materials Science
- Energy Harvesting
- Nanotechnology
Background:
- Triboelectric nanogenerators (TENGs) typically use polymer interfaces, limiting their use in high-temperature industrial environments.
- Abundant waste vibrational energy from industrial equipment is currently untapped.
- Existing TENGs are not suitable for high-temperature applications or monitoring in extreme conditions.
Purpose of the Study:
- To develop a high-temperature stable TENG for industrial vibrational energy harvesting.
- To explore the TENG's potential for structural health monitoring and human motion analysis.
- To create a biocompatible nanocomposite TENG suitable for extreme environments.
Main Methods:
- Fabrication of a biocompatible PDMS-hydrogel nanocomposite TENG incorporating ZnAl-layered double hydroxide (LDH) nanoparticles.
- Testing the TENG's output voltage stability at temperatures up to 200°C.
- Evaluating the TENG's performance for vibration analysis using different input waveforms and a deep learning model for human motion classification.
Main Results:
- The nanocomposite TENG achieved a maximum power density of 110 µW cm⁻².
- Exceptional output voltage stability was demonstrated up to 200°C.
- Distinct energy spectral changes were observed under different vibrational excitations, enabling vibration analysis.
- Successful classification of human motions using TENG voltage waveforms via a deep learning model.
Conclusions:
- The developed TENG is suitable for harvesting waste vibrational energy from high-temperature industrial equipment.
- The device shows significant potential for structural health monitoring and vibration analysis in industrial settings.
- The TENG's high-temperature functionality and motion monitoring capabilities open avenues for industrial energy harvesting and personnel monitoring in extreme environments.
