Nanotechnology Breakthrough Boosts MXene Conductivity 160-Fold Through Precision Atomic Surface Ordering

Scientists at HZDR develop a molten salt method to create MXenes with perfect atomic order, increasing electrical conductivity 160-fold for future tech.

By: AXL Media

Published: Apr 4, 2026, 10:10 AM EDT

Source: Information for this report was sourced from ScienceDaily

The Revolution of Ordered Two-Dimensional Materials

A significant hurdle in the development of high-performance nanomaterials has been overcome by a research team at Helmholtz-Zentrum Dresden-Rossendorf. By shifting away from traditional chemical etching processes, scientists have unlocked the true potential of MXenes, a family of ultra-thin materials known for their layered transition metal structures. Dr. Mahdi Ghorbani-Asl explains that while these materials were discovered over a decade ago, their performance was historically hindered by disordered surface atoms that acted as physical barriers to electron flow. The new findings demonstrate that achieving perfect atomic order on the material’s surface is the key to unlocking unprecedented levels of electrical efficiency.

Cleansing the Atomic Highway

Traditional manufacturing methods for MXenes often rely on harsh chemical etching, which leaves a chaotic residue of oxygen, fluorine, and chlorine atoms scattered across the material. Dr. Dongqi Li likens this disorder to potholes on a highway, which trap and scatter electrons as they attempt to move through the structure. In contrast, the newly developed GLS method utilizes molten salts and iodine vapor to strip away these imperfections. This gas-liquid-solid approach allows for the creation of MXene sheets from solid MAX phases with a level of cleanliness previously unattainable, ensuring that the surface terminations are uniform and highly ordered.

Quantifying the Conductive Leap

The practical implications of this structural precision are most evident in titanium carbide, one of the most studied variants of the MXene family. By applying the GLS method to produce a chlorine-terminated version of the material, researchers observed a staggering 160-fold increase in macroscopic conductivity. Furthermore, the mobility of charge carriers, a critical metric for how easily electrons traverse a substance, saw a fourfold enhancement. These results were verified through quantum transport simulations, which confirmed that the absence of surface "potholes" allows electrons to travel across the material with minimal interference.