Table 2 The fitted EIS results of the samples in 3.5 wt.% NaCl solution
Sample | Rs(Ω·cm2) | R1(kΩ·cm2) | CPE1(μF·cm−2·sn−1) | n1 | R2(kΩ·cm2) | CPE2(μF·cm−2·sn−1) | n2 | RW(mΩ·cm2 s−0.5) |
|---|---|---|---|---|---|---|---|---|
As-received | 18.06 | 8.74 ×104 | 1.93 ×10−5 | 0.93 | 1.37 ×105 | 1.42 ×10−6 | 0.99 | – |
As-received + HTO-20 h | 29.61 | 453.2 | 3.16 ×10−5 | 0.71 | 3.95 ×104 | 2.23 ×10−5 | 0.89 | – |
As-received + HTO-300 h | 29.10 | 1486 | 1.72 ×10−6 | 0.80 | 7155 | 4.22 ×10−5 | 0.92 | 0.57 |
MAC | 19.40 | 5.99 ×104 | 1.83 ×10−5 | 0.93 | 1.28 ×104 | 4.94 ×10−5 | 0.99 | – |
MAC + HTO-20 h | 6.17 | 21.23 | 1.02 ×10−4 | 0.75 | 2.32 ×104 | 1.86 ×10−4 | 0.80 | – |
MAC + HTO-300 h | 8.97 | 227.40 | 2.81×10−4 | 0.58 | 7848 | 2.09 ×10−4 | 0.84 | – |
