The development of MoS₂ in the metallic phase (1T‐MoS₂) is of paramount interest as it exhibits superior electrochemical activities compared to its semiconducting polymorph (2H‐MoS₂). In this work, an ionic liquid (IL)‐assisted solvothermal method was employed to produce the thermodynamically metastable 1T‐MoS₂. Structural characterization of the material suggests the intercalation of the IL into MoS₂. De‐intercalation of ILs from 1T‐MoS₂ leads to the formation of 2H‐MoS₂. Carbon cloth‐supported 1T‐MoS₂(1T‐MoS₂@CC) shows higher electrocatalytic activity towards acidic hydrogen evolution reaction (HER) by delivering a current density of 50 mA/cm² at an overpotential of 210 mV whereas 2H‐MoS₂@CC requires an overpotential of 260 mV to reach the same current density. In addition, the 1T‐MoS₂@CC electrode delivers a high electrochemical double‐layer storage ability compared to 2H‐MoS₂@CC in 1 M Na₂SO₄. The enhanced electrochemical activity of 1T‐MoS₂ over 2H‐MoS₂ may be due to the existence of conducting basal planes and the high interlayer spacing (about 1 nm) caused by the intercalation of ILs into the MoS₂ layers.

中文翻译：

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离子液体嵌入金属MoS2作为储能应用中的优质电极

硫化钼的发展₂在金属相（1T-MOS ₂）是最重要的关注，因为它相对于它的多晶型物半导体（2H-MOS表现出优良的电化学活性₂）。在这项工作中，采用离子液体（IL）辅助溶剂热法生产了热力学上亚稳态的1T-MoS ₂。该材料的结构表征表明IL插入MoS _2中。IL从1T-MoS ₂脱嵌导致形成2H-MoS ₂。碳布支撑的1T-MoS ₂（1T-MoS ₂@CC）通过在210 mV的超电势下提供50 mA / cm ²的电流密度显示出对酸性氢生成反应（HER）的更高的电催化活性，而2H-MoS ₂ @CC需要260 mV的超电势才能达到相同的电流密度。此外，与1H Na ₂ SO _4中的2H-MoS ₂ @CC相比，1T-MoS ₂ @CC电极具有更高的电化学双层存储能力。1T-MoS ₂比2H-MoS ₂增强的电化学活性可能是由于存在导电基面以及ILs插入MoS ₂层中导致的高层间距（约1 nm）。