Highly Ambient-Stable 1T-MoS<sub>2</sub> and 1T-WS<sub>2</sub> by Hydrothermal Synthesis under High Magnetic Fields.

Ding, Wei; Hu, Lin; Dai, Jianming; Tang, Xianwu; Wei, Renhuai; Sheng, Zhigao; Liang, Changhao; Shao, Dingfu et al. · ACS Nano · 2019

basic_science · Level V

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Abstract

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