Figure 6.

a) Diagram of liquid exfoliation method to synthesize TMDs NSs. b) LSV curves of the exfoliated and bulk MoS₂ material and c) their corresponding Tafel slopes. a–c) Reproduced with permission.^{[ 141 ]} Copyright 2016, American Chemical Society. d) The exfoliating process of bulk MoS₂ with different kinds of organolithium compounds. e,f) The electrochemical results of the MoS₂ NSs exfoliated with different organolithium compounds. d–f) Reproduced with permission.^{[ 142 ]} Copyright 2014, Wiley‐VCH. g) MoS₂ grown on Au substrate. h) Coverage‐dependent LSV curves. i) Statistical relationship between the edge lengths of MoS₂ and the exchange current density. g–i) Reproduced with permission.^{[ 114 ]} Copyright 2014, American Chemical Society. j) Top and side views of S‐vacancies incorporated MoS₂. k) $\mathrm{\Delta }{\text{G}}_{{\text{H}}^{\text{*}}}$ of MoS₂ with different S‐vacancies ratio. l) HER performance comparation of different MoS₂ samples with various amounts of strain and S vacancies. The Au substrate and Pt electrode as the reference. j–l) Reproduced with permission.^{[ 149 ]} Copyright 2016, Springer Nature.