Highly Efficient, Electro-thermal Heater Based on Marangoni-Driven, Oriented Reduced Graphene Oxide/Poly(ether imide)
Christos Pavlou1,2, Nikolaos Koutroumanis1,3, Anastasios C Manikas1,4
1Institute of Chemical Engineering Sciences, Foundation of Research and Technology- Hellas (FORTH/ICE-HT), Stadiou Street, Platani, Patras 26504, Greece.
ACS Applied Materials & Interfaces
|December 27, 2024
Summary
Researchers developed flexible, heat-resistant graphene/polymer nanolaminates using a novel self-assembly method. These materials exhibit excellent electrothermal properties, reaching 325°C, showing potential for advanced heating applications.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Graphene's exceptional electrical and thermal properties make it suitable for lightweight thermoelectric devices.
- Nanolaminate architectures, alternating graphene and polymer layers, offer enhanced composite properties.
Purpose of the Study:
- To fabricate highly ordered, flexible, and conductive graphene/polymer nanolaminates.
- To investigate the electrothermal performance of these novel nanolaminates.
Main Methods:
- Utilized a layer-by-layer approach with Marangoni-driven self-assembly.
- Alternated reduced graphene oxide (rGO) and poly(ether imide) (PEI) films.
- Characterized microstructure, mechanical behavior, and electrical conductivity up to 5.2 vol % rGO.
Main Results:
- Achieved freestanding, heat-resistant, and electrically conductive rGO/PEI nanolaminates.
- Demonstrated excellent heating properties with rapid responses up to 325°C.
- Attained high areal power density (30 kW/m²) at 5.20% rGO.
Conclusions:
- The developed nanolaminates possess significant potential for electrothermal applications.
- The Marangoni self-assembly method is effective for creating advanced graphene-based composites.
- These flexible heaters show promise for diverse technological uses.
