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Transition metal dichalcogenides (TMDs) are promising anode materials for sodium-ion batteries (SIBs), but suffer from low rate capability and poor cycling stability. Here, we describe our efforts in designing a unique MoS2-based van der Waals (vdW) superstructure, namely mesoporous MoS2@graphene supraparticles, for realizing unprecedented high-rate, long-life sodium storage. The key to obtaining mesoporous MoS2@graphene vdW supraparticles is the high mass loading of the initially hydrophilic (NH4)2MoS4 precursor into the hydrophobic mesoporous graphene, which is realized through a novel phase-transfer assisted method. Subsequent precursor decomposition confined in ∼11 nm mesopores triggers the epitaxial growth of MoS2 nanosheets featuring a spherically curved geometry and an expanded interlayer spacing. Thanks to the greatly improved electron and ion transport properties enabled by the unique mesoporous vdW superstructure, the resulting MoS2@graphene vdW supraparticles exhibit arguably the best rate performance ever reported. [ABSTRACT FROM AUTHOR]

A facile and scalable exfoliation approach is developed to prepare large-flake, few-layer MoS2 nanosheets with the assistance of carbon nanotubes (CNTs). CNTs not only facilaite the efficient exfoliation of MoS2 nanosheets, but also benefit their subsequent electrochemical applications for both hydrogen evolution and sodium-ion storage. This CNT-mediated exfoliation approach can be extended to other kinds of 2D materials. [ABSTRACT FROM AUTHOR]

A facile and scalable exfoliation approach is developed to prepare large-flake, few-layer MoS2 nanosheets with the assistance of carbon nanotubes (CNTs). CNTs not only facilaite the efficient exfoliation of MoS2 nanosheets, but also benefit their subsequent electrochemical applications for both hydrogen evolution and sodium-ion storage. This CNT-mediated exfoliation approach can be extended to other kinds of 2D materials.