Signal MXene Conductivity 160x Improvement + Solid-State Battery Supramolecular Electrolyte

Summary

An international team from TU Dresden, the Max Planck Institute of Microstructure Physics Halle, and Helmholtz-Zentrum Dresden-Rossendorf developed a new "gas-liquid-solid" (GLS) synthesis method, published in Nature Synthesis and reported by ScienceDaily on April 3, 2026, that produces MXenes with uniformly distributed halogen surface atoms instead of the mixed, disordered terminations from conventional chemical etching. Using titanium carbide MXene as a test case, the team created Ti3C2Cl2 with only chlorine atoms in a clean, ordered structure, achieving a 160-fold increase in macroscopic conductivity, a 13-fold enhancement in terahertz conductivity, and nearly a fourfold increase in charge carrier mobility compared to conventionally made material. The method also produced Ti3C2Br2 and Ti3C2I2 with single-batch yields of 81%, 83%, and 85% respectively, and was extended to seven additional MAX phases at a 10-gram single-batch scale. Separately, on January 18, 2026, researchers reported that silver addresses a critical electrolyte-compatibility challenge in solid-state battery technology. The fetched sources did not contain the previously cited detail of a "supramolecular electrolyte" advance in Nature Nanotechnology, so that specific claim could not be corroborated in this search.