Table 1. The gravimetric activities of various transition metal–derived NPMCs compared with the metal-free VA-NCNT and N-G-CNT + KB in PEM fuel cells.
All the data in the table have also been scaled by the electrode surface area.
| Materials |
Current at 0.8 V (A g−1) |
Current at 0.2 V (A g−1) |
Peak power density (W g−1) |
Catalyst loading (mg cm−2) |
O2-H2 back pressure (bars) |
Reference |
| FeCo/N/C | 15 | 700 | 200 | 2 | 1.0 | (14) |
| Fe/N/C | 8/100 | 800/2500 | 233/400 | 3.9/0.9 | 0.5 | (11) |
| Fe/N/C | 15 | 325 | 80 | 4 | 1.3 | (45) |
| VA-NCNT | 35 | 1550 | 320 | 0.16 | 1.5 | This work |
| N-G-CNT + KB | 30 | 1500 | 300 | 0.5 | 1.5 | This work |