Raman investigation of the O2, Pt/YSZ electrode under polarization

被引：27

作者：

Sum, OSN ^{[1
]}

Djurado, E ^{[1
]}

Pagnier, T ^{[1
]}

Rosman, N ^{[1
]}

Roux, C ^{[1
]}

Siebert, E ^{[1
]}

机构：

[1] UJF, ENSEEG, UMR 5631, CNRS,Lab Electrochim & Physicochim Mat & Interfac, F-38402 St Martin Dheres, France

来源：

SOLID STATE IONICS | 2005年 / 176卷 / 35-36期

关键词：

oxygen adsorption; Raman spectroscopy; catalysis; electrochemistry; nanocrystalline platinum; yttria-stabilized zirconia; spray pyrolysis;

D O I：

10.1016/j.ssi.2005.06.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In order to clarify the nature of the oxygen species at the Pt surface in electrochemical cells based on yttria-stabilized zirconia (YSZ), we have attempted to obtain in situ Raman spectra of Pt electrode in the temperature range from 300 to 500 degrees C under controlled atmosphere. The nanocrystalline Pt film, 0.5 mu m in thickness, was prepared by a spray pyrolysis technique. We have demonstrated the possibility of monitoring adsorbed oxygen coming from the gas phase or from polarization through YSZ. Surface Pt-O interaction resulting either from oxygen of the gas phase or oxygen supplied electrochemically showed similar spectral signature corresponding to a broad band located near 545 cm(-1) at 350 degrees C. This broad band was tentatively assigned to the Pt-O stretch mode of atomic oxygen on Pt. (c) 2005 Published by Elsevier B.V.

引用

页码：2599 / 2607

页数：9

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