624163.fig.0010
Figure 10: Fraction of the cyclic response of frequency change versus potential obtained at a rate of 5 mV s−1 using the following solutions: [(NH4)2SO4] 1 M (NH3 curve) and [Co2+] 1 mM + [(NH4)2SO4] 1 M (NH3−Co curve) adjusted at pH 9.3.