Metallic vanadium disulfide nanosheets as a platform material for multifunctional electrode applications

Citation:

Ji Q, Li C, Wang J, Niu J, Gong Y, Zhang Z, Fang Q, Zhang Y, Shi J, Liao L, et al. Metallic vanadium disulfide nanosheets as a platform material for multifunctional electrode applications. Nano Letters [Internet]. 2017;17:4908–4916.

摘要:

Nanothick metallic transition metal dichalcogenides such as VS2 are essential building blocks for constructing next-generation electronic and energy-storage applications, as well as for exploring unique physical issues associated with the dimensionality effect. However, such two-dimensional (2D) layered materials have yet to be achieved through either mechanical exfoliation or bottom-up synthesis. Herein, we report a facile chemical vapor deposition route for direct production of crystalline VS2 nanosheets with sub-10 nm thicknesses and domain sizes of tens of micrometers. The obtained nanosheets feature spontaneous superlattice periodicities and excellent electrical conductivities (∼3 × 103 S cm–1), which has enabled a variety of applications such as contact electrodes for monolayer MoS2 with contact resistances of ∼1/4 to that of Ni/Au metals, and as supercapacitor electrodes in aqueous electrolytes showing specific capacitances as high as 8.6 × 102 F g–1. This work provides fresh insights into the delicate structure–property relationship and the broad application prospects of such metallic 2D materials.

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SCI被引用次数:33.