Fig. 5From: Efficient Nickel Sulfide and Graphene Counter Electrodes Decorated with Silver Nanoparticles and Application in Dye-Sensitized Solar CellsCVs for the Pt, Gr, NiS, NiS/Gr, NiS/Ag, and NiS/Gr-Ag CEs for I −/I 3 − redox couple (a). Relationship between the anodic and cathodic peaks current versus square root of scan rate (b). Fifty cycles of CVs of the NiS/Gr-Ag electrode at a scan rate of 50 mV s−1 (c)Back to article page