Figure 4.

Determination of diffusion coefficients in LiClO₄ acetonitrile electrolyte solution. Cyclic voltammograms at different scan rates for a ZnO QD film in (a) 0.01 M LiClO₄ acetonitrile electrolyte solution, (b) 0.1 M LiClO₄ acetonitrile electrolyte solution, and (c) 1 M LiClO₄ acetonitrile electrolyte solution. J₀ stands for the current density. The panels include a peak current density versus scan rate plot on a log–log scale. The slope is given by , where v stands for the scan rate. The scans have negative direction, indicated by a black arrow. By increasing the electrolyte concentration, the current and the symmetry increases. (d) Average diffusion coefficient and the standard deviation obtained from three different measurements for different concentration of LiClO₄ acetonitrile electrolyte solution.