Ethanol oxidation peak current density of the 200th CV of the catalyst systems in a mixture of 0.5 mol L−1 H2SO4 + 0.5 mol L−1 C2H5OH solution at 25 °C at a scan rate of 50 mV s−1.
| Catalysts | 1st current density/mA cm−2 | 200th current density/mA cm−2 | 400th current density/mA cm−2 | 600th current density/mA cm−2 | 800th current density/mA cm−2 | 1000th current density/mA cm−2 |
|---|---|---|---|---|---|---|
| Pt–40% UO2/C | 4.81(100%) | 4.02(83.5%) | 3.38(70.2%) | 2.91(60.4%) | 2.48(51.5%) | 2.02(41.9%) |
| Pt–20% UO2/C | 7.31(100%) | 5.67(77.5%) | 4.74(64.8%) | 4.20(57.4%) | 3.62(49.5%) | 3.45(47.1%) |
| Pt–10% UO2/C | 7.47(100%) | 6.68(89.4%) | 5.62(75.2%) | 5.98(80.0%) | 4.91(65.7%) | 4.27(57.1%) |
| Pt–6.67% UO2/C | 6.83(100%) | 5.33(78.0%) | 4.46(65.3%) | 4.23(61.9%) | 3.62(53.0%) | 3.45(50.5%) |
| Pt–3.33% UO2/C | 5.97(100%) | 5.26(88.1%) | 4.48(75.0%) | 3.47(58.1%) | 3.01(50.4%) | 2.74(45.8%) |
| Pt–1.67% UO2/C | 6.01(100%) | 4.97(82.6%) | 4.22(70.2%) | 3.30(54.9%) | 2.89(48.0%) | 2.67(44.4%) |
| Pt–0.83% UO2/C | 6.05(100%) | 5.26(86.9%) | 4.48(74.0%) | 3.72(61.4%) | 2.91(48.0%) | 2.53(41.8%) |
| Pt–0.42% UO2/C | 5.77(100%) | 4.97(86.1%) | 4.43(76.7%) | 3.54(61.3%) | 2.74(47.4%) | 2.25(38.9%) |
| Pt–0.21% UO2/C | 5.81(100%) | 4.58(78.8%) | 3.59(61.7%) | 2.67(45.9%) | 2.41(41.4%) | 1.91(32.8%) |
| Pt–0.1% UO2/C | 5.36(100%) | 4.48(83.5%) | 3.66(68.2%) | 2.87(53.5%) | 2.62(48.8%) | 2.01(37.5%) |
| Pt/C-eg | 3.98(100%) | 3.54(88.9%) | 3.27(82.1%) | 2.63(66.0%) | 2.21(55.5%) | 1.75(43.9%) |