Application of the density functional theory to the fuel cell problem

Details Application of the density functional theory to the fuel cell problem Application of the density functional theory to the fuel cell problem

2008-08-17

arxiv.org/abs/0808.2302v1

Physics

Condensed Matter

Materials Science

Scientific paper

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.

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