| Pt掺杂对Mo-Ru-Se簇合物电催化氧还原性能的影响 |
| Effect of Platinum Doping on the Performance of Oxygen Reduction over Mo-Ru-Se Cluster |
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| 摘要: |
| 关键词: 氧电还原 Mo-Ru-Se簇合物 掺杂 性能 |
| 基金项目: |
| Abstract: The effect of platinum loading on the performance of oxygen reduction over Ru-based cluster catalyst in acid electrolytes has been studied by rotating disk electrode. The Pt-Mo-Ru-Se catalysts were synthesized by low temperature method and characterized by XRD, EDS and XPS. The activities were measured by potentiodynamic and AC impedance techniques. The results show that Mo-Ru-Se catalysts doped with platinum were with greatly enhanced catalytic activity and methanol resistance and have higher current density and lower overpotential for oxygen reduction reaction than that of platinum-free Mo-Ru-Se catalysts under the same conditions. The Mo-Ru-Se catalyst with 5% Pt loading showed the best performance, and the peak current density was 213 mA·mg-1 in 0.5 mol·L-1 H2SO4 solution, approached 70% of the Pt activity and the initial oxygen reduction potential was -0.05 V. |
| Keywords: oxygen electro-reduction Mo-Ru-Se cluster doping performance |
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| 刘世斌,牛秀红,段东红,张忠林,郝晓刚,孙彦平.Pt掺杂对Mo-Ru-Se簇合物电催化氧还原性能的影响[J].无机化学学报,2007,23(4):683-687. |
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