Table 2.
Atomic ratio of N species from deconvolution N 1s spectra.
| Samples | Pyridinic | Fe-N | Pyrrolic | Graphitic | Oxidized |
|---|---|---|---|---|---|
| PPC | 25.9 | - | 15.0 | 34.5 | 24.6 |
| N-PPC | 31.9 | - | 10.8 | 32.2 | 25.1 |
| Fe-N-PPC | 32.2 | 9.0 | 12.8 | 33.6 | 12.4 |
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