Highly Ambient-Stable 1T-MoS 2 and 1T-WS 2 by Hydrothermal Synthesis under High Magnetic Fields

Phase-controlled synthesis of metallic and ambient-stable two-dimensional MX (M is Mo or W, and X is S) with 1T octahedral coordination will endow these materials with superior performance as compared to their semiconducting 2H coordination counterparts. Here, we report a clean and facile route to prepare 1T-MoS and 1T-WS through hydrothermal processing under high magnetic fields. We reveal that the as-synthesized 1T-MoS and 1T-WS are ambient-stable for more than one year. Electrochemical measurements show that 1T-MoS performs much better than 2H-MoS as the anode for sodium ion batteries. These results can provide a clean and facile method to prepare ambient-stable 1T-phase MX .