Table 1.
Composition the average particle size, and the electrochemical performance of the PtRuIra/C and PtRuIrc/C catalysts.
| Catalyst | PtRuIra/C | PtRuIrc/C |
|---|---|---|
| Pt:Ru:Ir atom ratio | 3.5:3.0:1.0 | 3.5:3.0:1.0 |
| The average particle size/nm | 2.2 ± 0.02 | 5.0 ± 0.02 |
| ECSA/m2 g−1metal | 59.5 | 32.6 |
| The onset potential for CO oxidation/mV vs. RHE | 663 | 521 |
| The onset potential for methanol oxidation/mV vs. RHE | 370 | 338 |
| The mass activity for methanol oxidation/mA mg−1 | 147 | 298 |
| The specific activity for methanol oxidation/mA cm−2 | 0.25 | 0.91 |