Integrating high-capacity MoS₂ with carbon materials, especially graphene, into a rationally designed structure has been demonstrated an effective strategy to construct anode materials with superior electrochemical performance for application in lithium ion batteries (LIBs). Here, a rationally designed 3D MoS₂/dual-channel graphene framework (MoS₂/GA–GF) hybrid has been constructed through a two-step method. This dual-channel graphene framework (GA–GF) consists of two types of channels with different graphene types, graphene foam channels improving electron transport and graphene aerogel channels facilitating Li ion diffusion. With this structure, the MoS₂/GA–GF hybrid can efficiently improve electron and Li ion transport kinetics and accommodate the MoS₂ volume change during cycling. Benefiting from the above merits, the MoS₂/GA–GF electrode as a free-standing electrode presents a high initial capacity (1404 mA h g⁻¹) with a high initial coulombic efficiency (81.7%), excellent rate capability (593 mA h g⁻¹ at 5 A g⁻¹) and a superior long-term cycling stability (843 mA h g⁻¹ at 1 A g⁻¹ after 500 cycles) when evaluated as an LIB anode. Therefore, the GA–GF as a support and current collector is expected to be ideal for application in LIBs and other electrochemical energy storage devices.

中文翻译：

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合理设计3D MoS ₂ /双通道石墨烯骨架混合材料作为独立式电极以增强锂存储能力†

将高容量的MoS ₂与碳材料（尤其是石墨烯）整合到合理设计的结构中，已证明是一种有效的策略，可用于构建具有优异电化学性能的负极材料，以用于锂离子电池（LIB）。在这里，通过两步法构建了合理设计的3D MoS ₂ /双通道石墨烯框架（MoS ₂ / GA-GF）混合体。这种双通道石墨烯骨架（GA-GF）包括两种类型的石墨烯类型不同的通道：改善电子传输的石墨烯泡沫通道和促进Li离子扩散的石墨烯气凝胶通道。通过这种结构，MoS ₂/ GA-GF杂化物可以有效改善电子和锂离子的传输动力学，并适应循环过程中MoS _2的体积变化。受益于上述优点，作为独立式电极的MoS ₂ / GA-GF电极具有较高的初始容量（1404 mA hg ^-1）和较高的初始库仑效率（81.7％），以及出色的倍率能力（593 mA hg）^-1在5 A G ^-1）和优异的长期循环稳定性（843毫安汞柱^-1 1个A G ^-1时作为LIB正极评价500个循环后）。因此，预计GA-GF作为支撑体和集电器非常适用于LIB和其他电化学储能设备。