Highly thermal conductivity and flame retardant flexible graphene/MXene paper based on an optimized interface and nacre laminated structure
Autor: | Maoping Lu, Yingchun Liu, Hangzhen Zhang, Mangeng Lu, Enxiang Jiao, Kun Wu, Jun Shi |
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Rok vydání: | 2021 |
Předmět: |
Materials science
Graphene Oxide 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Combustion Thermal conduction 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Thermal conductivity chemistry Mechanics of Materials law Thermal Ceramics and Composites Interfacial thermal resistance Composite material 0210 nano-technology Fire retardant |
Zdroj: | Composites Part A: Applied Science and Manufacturing. 141:106227 |
ISSN: | 1359-835X |
Popis: | Low thermal conductivity (TC) and poor flame retardancy of graphene oxide (GO) have limited its application in thermal management. Herein, a facile strategy is developed to fabricate flexible and free-standing graphene/MXene (GM) films by filtration of MXene and GO dispersions, followed by reduction and thermal welding. As results, interlamellar insertion of MXene into graphene has occurred and optimized interface was constructed between MXene and graphene. According to Y. Agari’s semi-empirical model and modified Maxwell-Garnett effective medium approximation, demonstrating that an optimized interface between MXene and graphene is conducive to heat conduction, and reduces the interface scattering. In-plane TC thus reached to 26.49 Wm−1K−1, and the thermal boundary resistance decreased to 8.81 × 10−10 from 1.54 × 10−8 m2KW−1. GM films also present excellent flame retardancy (peak heat release is ~10 Wg−1) and it still maintained initial shape after combustion. Using as-prepared GM films as heat dissipation, we demonstrate its potential usefulness in electronic device-cooling applications. |
Databáze: | OpenAIRE |
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