Lithium-sulfur (Li-S) batteries are electrochemical energy devices that can store electrical energy in solid-state sulfur as a cathode. However, despite their high capacity and energy density, there are key issues for commercialization of Li-S batteries that need to be solved, such as shuttle effect to be solved. In this study, for high-rate performance Li-S batteries, we fabricated an interlayer consisting of molybdenum disulfide (MoS₂) and carbon nanofiber (CNF) (MoS₂/CNF). The in situ phase transition of 2H-MoS₂ to 1T-MoS₂ in the MoS₂/CNF was electrochemically induced. The 1T-MoS₂/CNF interlayer structure was found to effectively suppress the shuttle effect. The superior rate performance of the Li-S cell with 1T-MoS₂/CNF was found to result from the interlayer structures acting as an upper current collector and a reservoir for Li-polysulfides.

锂硫（Li-S）电池是电化学能源设备，可以将固态硫中的电能存储为阴极。然而，尽管它们具有高容量和能量密度，但是仍需要解决锂-硫电池商业化的关键问题，例如需要解决的穿梭效应。在这项研究中，对于高速率性能的Li-S电池，我们制造了由二硫化钼（MoS ₂）和碳纳米纤维（CNF）（MoS ₂ / CNF）组成的中间层。电化学诱导了MoS ₂ / CNF中2H-MoS ₂到1T-MoS _2的原位相变。1T-MoS ₂发现/ CNF夹层结构可有效抑制穿梭效应。发现具有1T-MoS ₂ / CNF的Li-S电池具有较高的倍率性能，这是由于层间结构充当了上层集电器和多硫化锂的储库。