论文标题

RUO2(100),RUO2(110)和PT(111)的表面上的船尾层:表面X射线散射研究

Stern Layers on Surfaces of RuO2(100), RuO2(110), and Pt(111): Surface X-ray Scattering Studies

论文作者

Kawaguchi, Tomoya, Rao, Reshma R., Lunger, Jaclyn R., Liu, Yihua, Walko, Donald A., Karapetrova, Evguenia A., Komanicky, Vladimir, Shao-Horn, Yang, You, Hoydoo

论文摘要

报道了电化学船尾层的表面X射线散射研究。将0.1 m CSF电解质中RUO2(110)和(100)的界面形成的船尾层与PT(111)上先前报道的船尾层进行了比较[111)[Liu等,J。Phys。化学Lett。,9(2018)1265]。尽管接近氢进化反应的电势处的CS+密度曲线相似,但与PT(111)表面上的水合层相比,RUO2表面上表面的水合层和RUO2表面上的CS+层相似,可能是由于RUO2表面的氧终止。我们还讨论了PT(111)表面上柱层中的平面排序。

Surface X-ray scattering studies of electrochemical Stern layer are reported. The Stern layers formed at the interfaces of RuO2 (110) and (100) in 0.1 M CsF electrolyte are compared to the previously reported Stern layer on Pt(111) [Liu et al., J. Phys. Chem. Lett., 9 (2018) 1265]. While the Cs+ density profiles at the potentials close to hydrogen evolution reaction are similar, the hydration layers intervening the surface and the Cs+ layer on RuO2 surfaces are significantly denser than the hydration layer on Pt(111) surface possibly due to the oxygen termination of RuO2 surfaces. We also discuss in-plane ordering in the Stern layer on Pt(111) surface.

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