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arXiv 0808.2302cond-mat.mtrl-sci
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密度泛函理论在燃料电池问题中的应用

Application of the density functional theory to the fuel cell problem

Sergey Stolbov Marisol Alcántara_Ortigoza Talat S. Rahman

摘要:

燃料电池在氢经济中的大规模实际应用只有在成本显著降低的同时电极的电催化性能显著改善的情况下才有可能。这一目标可以通过合理设计新材料来实现,这需要理解电催化的微观机制。我们讨论了密度泛函理论的一些应用,这个问题使用的情况下,与Pt的Ru合金。我们提供了一些细节Pt岛Ru纳米粒子,我们的计算解释了高CO耐受性观察到的这种阳极的燃料电池。我们还讨论了负责这些胰岛的稳定性的纳米粒子的能量。

英文摘要:

The large-scale practical application of fuel cells in hydrogen economy is possible only with a dramatic reduction of the cost coupled with a significant improvement of the electrocatalytic properties of the electrodes. This goal can be achieved through a rational design of new materials, which requires understanding of the microscopic mechanisms underlying the electrocatalysis. We discuss some applications of the density functional theory to this problem using using alloying of Ru with Pt as the case in point. We provide some details for Pt islets on Ru nanoparticles, for which our calculations explain the high CO tolerance observed for such anodes of the fuel cell. We also discuss energetics responsible for the stability of these islets on the nanoparticles.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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