Study of ruthenium electrodes by X-Ray Emission Spectroscopy (XES) (CAT#: STEM-ST-0289-WXH)

Name: Study of ruthenium electrodes by X-Ray Emission Spectroscopy (XES)
SKU: STEM-ST-0289-WXH
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Introduction

Hydrogen and oxygen adsorption properties of ruthenium surfaces are characterized and shown to be analogous to those of other noble metals. Ruthenium dissolves on potential cycles, the rate of dissolution on cycles to 1.54 V being much greater than for Pd, Rh, Ir, Pt and Au. Treatment in hot chromic acid or potential cycling to 1.3 V or above results in significant changes in the voltammogram. X-ray emission spectroscopy has demonstrated that these changes are associated with the formation and growth of an oxygen-containing layer on the ruthenium surface.

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Principle Applications Materials

Principle

XES is an element-specific method primarily used to analyze the partially occupied electronic structure of materials. The technique is one of the photon-in-photon-out spectroscopies in which an incident X-ray photon is used to excite a core electron, which leads to the transition of the electron from the ground state to the excited state, and then the excited state of the electron decays with the emission of an X-ray photon in order to fill the core hole.