fig4

Figure 4. High-resolution XPS spectra of (A) Mo 3d, (B) Ni 2p, (C) S 2p, and (D) C 1s for the NiS@MoS2/NC50, MoS2/NC and NiS/NC complexes, respectively.
Figure 4. High-resolution XPS spectra of (A) Mo 3d, (B) Ni 2p, (C) S 2p, and (D) C 1s for the NiS@MoS2/NC50, MoS2/NC and NiS/NC complexes, respectively.
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