Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (2): 20230436.doi: 10.7503/cjcu20230436
• Physical Chemistry • Previous Articles Next Articles
JIA Linhan1, YANG Daijun1(), MING Pingwen1, MIN Junying2, LENG Yu3
Received:
2023-10-10
Online:
2024-02-10
Published:
2023-11-30
Contact:
YANG Daijun
E-mail:yangdaijun@tongji.edu.cn
Supported by:
CLC Number:
TrendMD:
JIA Linhan, YANG Daijun, MING Pingwen, MIN Junying, LENG Yu. Effect of Service Environment of Proton Exchange Membrane Fuel Cell on the Corrosion Behaviors of TA1[J]. Chem. J. Chinese Universities, 2024, 45(2): 20230436.
Temperature/℃ | pH value | Gas | Ecorr /V | Icorr /(μA·cm‒2) | Temperature/℃ | pH value | Gas | Ecorr /V | Icorr /(μA·cm‒2) |
---|---|---|---|---|---|---|---|---|---|
70 | 1 | Ar | -0.198 | 1.54 | 80 | 1 | O2 | -0.073 | 4.29 |
3 | Ar | -0.097 | 0.54 | 3 | O2 | 0.019 | 2.64 | ||
1 | O2 | -0.042 | 3.35 | 90 | 1 | Ar | -0.210 | 1.95 | |
3 | O2 | 0.054 | 2.62 | 3 | Ar | -0.116 | 1.28 | ||
80 | 1 | Ar | -0.206 | 2.36 | 1 | O2 | -0.085 | 4.07 | |
3 | Ar | -0.102 | 0.74 | 3 | O2 | -0.003 | 3.64 |
Table 1 Results of pH and gas atmospheres on Tafel curves of TA1 under different temperatures
Temperature/℃ | pH value | Gas | Ecorr /V | Icorr /(μA·cm‒2) | Temperature/℃ | pH value | Gas | Ecorr /V | Icorr /(μA·cm‒2) |
---|---|---|---|---|---|---|---|---|---|
70 | 1 | Ar | -0.198 | 1.54 | 80 | 1 | O2 | -0.073 | 4.29 |
3 | Ar | -0.097 | 0.54 | 3 | O2 | 0.019 | 2.64 | ||
1 | O2 | -0.042 | 3.35 | 90 | 1 | Ar | -0.210 | 1.95 | |
3 | O2 | 0.054 | 2.62 | 3 | Ar | -0.116 | 1.28 | ||
80 | 1 | Ar | -0.206 | 2.36 | 1 | O2 | -0.085 | 4.07 | |
3 | Ar | -0.102 | 0.74 | 3 | O2 | -0.003 | 3.64 |
pH value | Temperature/℃ | Gas | Ecorr /V | Icorr /(μA·cm‒2) | pH value | Temperature/℃ | Gas | Ecorr /V | Icorr /(μA·cm‒2) |
---|---|---|---|---|---|---|---|---|---|
1 | 70 | Ar | -0.198 | 1.54 | 3 | 70 | Ar | -0.097 | 0.54 |
80 | Ar | -0.206 | 2.35 | 80 | Ar | -0.102 | 0.74 | ||
90 | Ar | -0.210 | 1.95 | 90 | Ar | -0.116 | 1.28 | ||
70 | O2 | -0.042 | 3.35 | 70 | O2 | 0.054 | 2.62 | ||
80 | O2 | -0.073 | 4.29 | 80 | O2 | 0.019 | 2.64 | ||
90 | O2 | -0.085 | 4.07 | 90 | O2 | -0.003 | 3.64 |
Table 2 Results of temperatures and gas atmospheres on Tafel curves of TA1 under different pH values
pH value | Temperature/℃ | Gas | Ecorr /V | Icorr /(μA·cm‒2) | pH value | Temperature/℃ | Gas | Ecorr /V | Icorr /(μA·cm‒2) |
---|---|---|---|---|---|---|---|---|---|
1 | 70 | Ar | -0.198 | 1.54 | 3 | 70 | Ar | -0.097 | 0.54 |
80 | Ar | -0.206 | 2.35 | 80 | Ar | -0.102 | 0.74 | ||
90 | Ar | -0.210 | 1.95 | 90 | Ar | -0.116 | 1.28 | ||
70 | O2 | -0.042 | 3.35 | 70 | O2 | 0.054 | 2.62 | ||
80 | O2 | -0.073 | 4.29 | 80 | O2 | 0.019 | 2.64 | ||
90 | O2 | -0.085 | 4.07 | 90 | O2 | -0.003 | 3.64 |
Potential/V(vs. Ag/AgCl) | Rs/(Ω·cm2) | 1010 Cp/(F·cm‒2) | Rp/(Ω·cm2) | n | Rct/(Ω·cm2) |
---|---|---|---|---|---|
-0.1(pre) | 357.57 | 2.598 | 1537.50 | 0.946 | 78611.25 |
-0.1(post) | 74.21 | 2.483 | 1470.00 | 0.892 | 63395.00 |
0.6(pre) | 252.88 | 3.522 | 1217.50 | 0.899 | 22602.50 |
0.6(post) | 62.59 | 2.715 | 1365.00 | 0.880 | 14803.75 |
1.0(pre) | 237.63 | 3.579 | 1108.25 | 0.900 | 25988.75 |
1.0(post) | 6.25 | 2.499 | 1321.25 | 0.893 | 17640.00 |
1.4(pre) | 216.75 | 2.454 | 1968.75 | 0.894 | 23663.75 |
1.4(post) | 82.69 | 2.422 | 1847.50 | 0.880 | 18186.25 |
Table 3 Results of EIS of TA1 under different potentials*
Potential/V(vs. Ag/AgCl) | Rs/(Ω·cm2) | 1010 Cp/(F·cm‒2) | Rp/(Ω·cm2) | n | Rct/(Ω·cm2) |
---|---|---|---|---|---|
-0.1(pre) | 357.57 | 2.598 | 1537.50 | 0.946 | 78611.25 |
-0.1(post) | 74.21 | 2.483 | 1470.00 | 0.892 | 63395.00 |
0.6(pre) | 252.88 | 3.522 | 1217.50 | 0.899 | 22602.50 |
0.6(post) | 62.59 | 2.715 | 1365.00 | 0.880 | 14803.75 |
1.0(pre) | 237.63 | 3.579 | 1108.25 | 0.900 | 25988.75 |
1.0(post) | 6.25 | 2.499 | 1321.25 | 0.893 | 17640.00 |
1.4(pre) | 216.75 | 2.454 | 1968.75 | 0.894 | 23663.75 |
1.4(post) | 82.69 | 2.422 | 1847.50 | 0.880 | 18186.25 |
Duration/h | Rs/(Ω·cm2) | 1010Cp/(F·cm‒2) | Rp/(Ω·cm2) | n | Rct/(Ω·cm2) |
---|---|---|---|---|---|
2(pre) | 265.38 | 3.643 | 981.63 | 0.895 | 24020.00 |
2(post) | 27.15 | 2.875 | 1082.25 | 0.882 | 15617.50 |
4(pre) | 205.00 | 3.651 | 1056.63 | 0.891 | 21075.00 |
4(post) | 116.25 | 3.002 | 1587.50 | 0.861 | 17267.50 |
6(pre) | 236.50 | 3.082 | 1297.50 | 0.906 | 29443.75 |
6(post) | 129.88 | 2.915 | 1436.25 | 0.868 | 22193.75 |
8(pre) | 208.75 | 3.189 | 1049.75 | 0.894 | 23443.75 |
8(post) | 119.00 | 3.722 | 952.00 | 0.867 | 29462.50 |
10(pre) | 284.13 | 2.822 | 1106.38 | 0.891 | 20160.00 |
10(post) | 191.38 | 3.505 | 1014.38 | 0.869 | 51011.25 |
Table 4 Results of EIS of TA1 under different test duration
Duration/h | Rs/(Ω·cm2) | 1010Cp/(F·cm‒2) | Rp/(Ω·cm2) | n | Rct/(Ω·cm2) |
---|---|---|---|---|---|
2(pre) | 265.38 | 3.643 | 981.63 | 0.895 | 24020.00 |
2(post) | 27.15 | 2.875 | 1082.25 | 0.882 | 15617.50 |
4(pre) | 205.00 | 3.651 | 1056.63 | 0.891 | 21075.00 |
4(post) | 116.25 | 3.002 | 1587.50 | 0.861 | 17267.50 |
6(pre) | 236.50 | 3.082 | 1297.50 | 0.906 | 29443.75 |
6(post) | 129.88 | 2.915 | 1436.25 | 0.868 | 22193.75 |
8(pre) | 208.75 | 3.189 | 1049.75 | 0.894 | 23443.75 |
8(post) | 119.00 | 3.722 | 952.00 | 0.867 | 29462.50 |
10(pre) | 284.13 | 2.822 | 1106.38 | 0.891 | 20160.00 |
10(post) | 191.38 | 3.505 | 1014.38 | 0.869 | 51011.25 |
Duration/h | Surface roughness/μm | Element content(%, mass fraction) | ||||
---|---|---|---|---|---|---|
Ra | Rz | O | Ti | Si | Fe | |
0 | 1.272 | 6.652 | 2.53 | 96.78 | 0.47 | 0.22 |
2 | 1.523 | 8.113 | 9.30 | 89.69 | 0.68 | 0.33 |
4 | 1.888 | 9.944 | 8.23 | 90.83 | 0.38 | 0.56 |
6 | 2.419 | 14.783 | 12.76 | 86.24 | 0.61 | 0.39 |
8 | 2.381 | 14.310 | 13.74 | 85.41 | 0.43 | 0.42 |
10 | 2.528 | 15.628 | 14.68 | 84.40 | 0.35 | 0.57 |
Table 5 Surface roughness and element contents in the surface of TA1s
Duration/h | Surface roughness/μm | Element content(%, mass fraction) | ||||
---|---|---|---|---|---|---|
Ra | Rz | O | Ti | Si | Fe | |
0 | 1.272 | 6.652 | 2.53 | 96.78 | 0.47 | 0.22 |
2 | 1.523 | 8.113 | 9.30 | 89.69 | 0.68 | 0.33 |
4 | 1.888 | 9.944 | 8.23 | 90.83 | 0.38 | 0.56 |
6 | 2.419 | 14.783 | 12.76 | 86.24 | 0.61 | 0.39 |
8 | 2.381 | 14.310 | 13.74 | 85.41 | 0.43 | 0.42 |
10 | 2.528 | 15.628 | 14.68 | 84.40 | 0.35 | 0.57 |
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