Related Experiment Video
Updated: Aug 13, 2026
09:58
Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording
Published on: February 12, 2020
Phonon-Dominated In-Plane Thermal Conductivity of Single-Flake Metallic Ti3C2Tx MXene
Max C van Hemert1, Hugh Ramsden1, Stefano Ippolito2
1Department of Applied Physics and Science Education, Eindhoven University of Technology, Den Dolech 2, Eindhoven, 5612AZ, The Netherlands.
Nano Letters
|August 12, 2026
Summary
Phonons, not just electrons, significantly impact heat transport in Ti3C2Tx MXene, a 2D material. This study reveals an unconventional balance of heat and charge transport properties in these promising materials.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- MXenes are advanced 2D materials with diverse applications, including energy storage and thermal management.
- Understanding thermal transport in MXenes is crucial, but the dominant heat carriers (electrons vs. phonons) and their conductivity remain unclear.
- Existing experimental data on in-plane thermal conductivity of MXenes show significant variations.
Purpose of the Study:
- To investigate the in-plane heat transport mechanisms in single Ti3C2Tx MXene flakes.
- To determine the relative contributions of electrons and phonons to thermal conductivity.
- To elucidate the unconventional heat and charge transport properties of Ti3C2Tx MXene.
Main Methods:
- Utilized spatiotemporal microscopy for direct, real-time visualization of heat transport.
- Measured in-plane thermal diffusivity of single Ti3C2Tx MXene flakes.
- Estimated electronic conductivity using terahertz measurement data.
Main Results:
- Obtained a thermal diffusivity of 0.05 cm2 s-1 for Ti3C2Tx MXene.
- Calculated an in-plane thermal conductivity of 13-16 W m-1 K-1.
- Determined that electrons contribute at most 50% of the total heat transport.
Conclusions:
- Phonons play a significant role in the heat transport of Ti3C2Tx MXene, despite its metallic nature.
- Ti3C2Tx MXene exhibits an unconventional combination of heat and charge transport properties.
- This research provides critical insights into the thermal behavior of 2D MXene materials.
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