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Potentials for different NiO samples at a scan rate of 50 mV s−1. Epa is the anodic peak potential, Epc is the cathodic peak potential, and ΔEp is the peak-to-peak separation.
| Sample | Epa (V) | Epc (V) | ΔEp (V) |
|---|---|---|---|
| A4 | 0.350 | 0.119 | 0.231 |
| U4 | 0.342 | 0.117 | 0.225 |
| A6 | 0.388 | 0.083 | 0.305 |
| U6 | 0.361 | 0.081 | 0.280 |
