Herein, a two-dimensional (2D) interspace-confined synthetic strategy is developed for producing MoS₂-intercalated graphite (G-MoS₂) hetero-layers composite through sulfuring the pre-synthesized stage-1 MoCl₅-graphite intercalation compound (MoCl₅-GIC). The in situ grown MoS₂ nanosheets (3–7 layers) are evenly encapsulated in graphite layers with intimate interface thus forming layer-by-layer MoS₂-intercalated graphite composite. In this structure, the unique merits of MoS₂ and graphite components are integrated, such as high capacity contribution of MoS₂ and the flexibility of graphite layers. Besides, the tight interfacial interaction between hetero-layers optimizes the potential of conductive graphite layers as matrix for MoS₂. As a result, the G-MoS₂ exhibits a high reversible Li⁺ storage of 344 mAh·g⁻¹ even at 10 A·g⁻¹ and a capacity of 539.9 mAh·g⁻¹ after 1,500 cycles at 5 A·g⁻¹. As for potassium ion battery, G-MoS₂ delivers a reversible capacity of 377.0 mAh·g⁻¹ at 0.1 A·g⁻¹ and 141.2 mAh·g⁻¹ even at 2 A·g⁻¹. Detailed experiments and density functional theory calculation demonstrate the existence of hetero-layers enhances the diffusion rates of Li⁺ and K⁺. This graphite interspace-confined synthetic methodology would provide new ideas for preparing function-integrated materials in energy storage and conversion, catalysis or other fields.

本文提出了一种二维（2D）空间受限的合成策略，通过硫化预合成的阶段1 MoCl _5-石墨插层化合物（MoCl）来生产MoS _2-插层石墨（G-MoS ₂）异质层复合材料。₅ -GIC）。在原位生长的MoS ₂纳米片（3-7层）被均匀地包裹在与如此亲密界面层形成由层的MoS石墨层₂ -intercalated石墨复合。在这种结构中，MoS ₂和石墨成分的独特优势得以整合，例如MoS _2的高容量贡献以及石墨层的柔韧性。此外，异质层之间的紧密界面相互作用优化了导电石墨层作为MoS ₂基质的潜力。结果，即使在10 A·g ^-1下，G-MoS _2仍显示出344 mAh·g ^-1的高可逆Li ⁺储存，在5 A·g-下经过1,500次循环后的容量为539.9 mAh·g ^{-1 。 1}。作为钾离子电池，G-MOS ₂提供377.0毫安·g的可逆容量^-1 0.1 A·克^-1和141.2毫安·克^-1即使在2 A·克^-1。详细的实验和密度泛函理论计算表明，异质层的存在提高了Li ⁺和K ⁺的扩散速率。这种石墨空间受限的合成方法将为在能量存储和转化，催化或其他领域中制备功能整合材料提供新思路。