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1H NMR T1, and ionic conductivity values for Nafion 117 membrane heat-treated at 25, 50, and 80 °C.
| Sample Name | Heat-Treatment Temperature (°C) | Nucleus (1H) | |
|---|---|---|---|
| T1 (s) | Ionic Conductivity (S/cm) | ||
| Nafion 117 membrane (ref.) | – | 0.22 | 0.062 |
| A | 25 | 0.25 | 0.079 |
| B | 50 | 0.20 | 0.079 |
| C | 80 | 0.20 | 0.077 |
