Fig. 3
Ion concentration change during potentiostatic charge/discharge. Cell voltage U (blue), charge signal Q (black), and relative attenuation A (red) versus time for 1 M CsCl, 1 M RbBr, and 1 M NaCl for a single chronoamperometry step at + 0.5 V (a, c, e) and -0.5 V (b, d, f). The thick gray lines indicate the theoretical attenuation curves calculated from Eq. 2 for pure ion swapping (X = 0) and counter-ion adsorption (X = 1). Note the different ratios between cation and anion attenuation coefficients μeff of the different salts (Table 1)
