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| 论文编号: |
122214O120110299 |
| 第一作者所在部门: |
913组 |
| 中文论文题目: |
Nitrogen-Doped Hollow Carbon Nanoparticles with Excellent Oxygen Reduction Performances and Their Electrocatalytic Kinetics
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| 英文论文题目: |
Nitrogen-Doped Hollow Carbon Nanoparticles with Excellent Oxygen Reduction Performances and Their Electrocatalytic Kinetics
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| 论文题目英文: |
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| 作者: |
赵江红，朱珍平
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| 论文出处: |
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| 刊物名称: |
The Journal of Physical Chemistry C
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| 年: |
2011
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| 卷: |
115 |
| 期: |
50 |
| 页: |
25148 |
| 联系作者: |
赵江红，朱珍平 |
| 收录类别: |
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| 影响因子: |
4.524
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| 摘要: |
To propel the commercialization of fuel cells, the development of e？cient nonprecious metal catalysts, speci？cally cathodic oxygen reduction catalysts, is turning into reality because the great advancements have been made on nitrogen-doped carbonmaterials recently. In this study, we demonstrated that
nitrogen-doped hollow carbon nanoparticles (N-HCNPs) exhibit excellent electrocatalytic performance for oxygen reduction reaction (ORR) in alkaline
fuel cells. Cyclic voltammetry and rotating ring-disk electrode voltammetry showed that the ORR activity of N-HCNPs approaches that of commercial PtC catalyst and ismuch better compared with nitrogen-free counterparts due to the incorporation of nitrogen atoms into graphitic structures. Kinetic studies indicated that the involvement of nitrogen induces a totally di？erent oxygen
adsorption mechanism and a four-electron dominated reaction pathway for N-HCNPs in comparison with nitrogen-free HCNPs,very similar to the observations in PtC. Moreover, N-HCNPs exhibited good operation stability and excellent tolerance to methanol crossover and CO poisoning for ORR superior to that of PtC. Our ？ndings suggest that N-HCNPs catalyst is a promising alternative for the Pt-based catalysts in fuel cells. |
| 英文摘要: |
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