Interfacial Laser-Induced Graphene Enabling High-Performance Liquid-Solid Triboelectric Nanogenerator
Yun Chen1,2, Bin Xie1, Junyu Long1
1State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, School of Electromechnical Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
Advanced Materials (Deerfield Beach, Fla.)
|September 12, 2021
Summary
Researchers developed a new laser-induced graphene (LIG) method to create superhydrophobic fluorine-doped graphene patterns. This enables efficient flexible droplet-based electricity generators (DEGs) with high power density and stability.
Area of Science:
- Materials Science
- Nanotechnology
- Energy Harvesting
Background:
- Laser-induced graphene (LIG) offers high-throughput patterning but faces limitations in creating complex devices.
- Developing advanced graphene structures for energy applications requires innovative fabrication techniques.
Purpose of the Study:
- To demonstrate an in-situ growing LIG process for patterning superhydrophobic fluorine-doped graphene.
- To fabricate a flexible droplet-based electricity generator (DEG) using the novel LIG method.
- To evaluate the performance and stability of the developed DEG device.
Main Methods:
- Utilized distinct spectral responses of fluorinated ethylene propylene (FEP)-coated polyimide (PI) during laser excitation for LIG formation.
- Developed a spectral-tuned interfacial LIG process without requiring multistep procedures or specific atmospheres.
- Constructed a flexible DEG using the patterned superhydrophobic graphene electrodes.
Main Results:
- Achieved superhydrophobic fluorine-doped graphene patterning on FEP-coated PI via an in-situ LIG process.
- Fabricated a flexible DEG exhibiting a peak power density of 47.5 W m-2 from a 105 µL water droplet impact.
- Demonstrated superior cyclability and operational stability of the DEG under varying humidity and pH conditions.
Conclusions:
- The facile spectral-tuned interfacial LIG process enables efficient fabrication of functional graphene-based devices.
- The developed DEG shows significant potential for practical energy harvesting applications.
- This method can be extended to create diverse functional devices with tailored properties.
