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EIS parameters obtained by fitting the impedance plots with the equivalent electric circuits in Figure 5.
| CV(III) (mol·L−1) | Rs (Ω) | Rct (Ω) | CH2SO4 (mol·L−1) | Rs (Ω) | Rct (Ω) |
|---|---|---|---|---|---|
| 0.1 | 1.891 | 24.11 | 0.5 | 4.594 | 18.23 |
| 0.3 | 1.988 | 18.58 | 1.0 | 3.34 | 21.75 |
| 0.5 | 2.283 | 8.899 | 1.5 | 2.51 | 20.39 |
| 1.0 | 2.389 | 8.28 | 2.0 | 2.072 | 19.47 |
| – | – | – | 3.0 | 1.053 | 19.5 |
