Figure 1. Synthesis of vertically stacked carbon-MoS₂ heterostructured nanosheets.

(a,b) TEM images of pristine exfoliated MoS₂ nanosheets. (c) Edge-view TEM image of a vertically stacked carbon-MoS₂ (C-MoS₂) nanosheet. (d) Energy-dispersive X-ray spectroscopy analysis of a stacked C-MoS₂ nanosheet. The coloured inset describes the colour assignment of each mapped element, overlapping Mo and S signals appear yellow in the image. (e) Scanning electron microscopy image of an electrophoretically assembled electrode material formed with stacked C-MoS₂ nanosheets. Scale bars, 4 nm (a,b) 10 nm (c,d) and 1 μm (e). (f) Raman spectroscopy and (g) X-ray photoelectron spectroscopy of pristine MoS₂ nanosheets and stacked C-MoS₂ nanosheets.