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Fig 1.

TEM images of MoS2 NSs/rGO.

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Fig 2.

XRD pattern of MoS2 NSs/rGO hybrid (a). XPS images of Mo 3d (b) S 2p (c) and C (d).

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Fig 3.

Polarization curves for the catalysts of MoS2 NSs, MoS2 NSs/rGO (5 wt.%, 13 wt.% and 20 wt.%.), and Pt/C (a) and their corresponding Tafel plots (b). Impedance spectroscopy at an overpotential of 120 mV (c). Durability test for MoS2 NSs/rGO hybrid catalyst (d). The inset is TEM image of the MoS2 NSs/rGO hybrid after 2000 cycles.

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Fig 4.

Schematic illustration of the mechanism governing the catalytic HER on the MoS2 NSs/rGO structure.

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Fig 4 Expand