Photoelectron Spectroscopy of Practical Electrode Materials
Photoelectron Spectroscopy of Practical Electrode Materials
复制标题
实用电极材料的光电子能谱
DOI:
10.1002/9783527616756.ch2
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发表时间:
1990
期刊:
影响因子:
--
通讯作者:
R. Kötz
中科院分区:
文献类型:
--
作者:
R. Kötz
Surface sensitive spectroscopic techniques have found increasing acceptance in electrochemistry during the last ten to fifteen years. This development is nicely reflected by the contributions to a series of conferences devoted to “non traditional” studies of the solid/electrolyte interface held in La Colle-sur-Loup 1977 [11, Snowmass 1979 [a], Logan 1982 [3] and Berlin 1986 [4]. In summarizing the conference on “Electronic and Molecular Structure of Electrode Electrolyte Interface” E. Yeager has given an overview of available in situ and ex situ techniques [5] adopted by electrochemists from surface scientists. Electron spectroscopy for chemical analysis (ESCA) or X-ray photoelectron spectroscopy (XPS as it will be called throughout this chapter) has to be regarded as an ex situ technique for electrochemical interface studies. At least since the contribution of Siegbahn [6] and his coworkers, which were awarded with the Nobel Prize in 1981, XPS was developed into a standard surface analytical technique.The development of XPS is tightly bound to the development of photoelectron spectroscopy (PS) in general, for which the theoretical background and the experimental facilities for reliable ultra high vacuum (UHV) control had to be provided. The rapid development of PS and surface science can be visualized when keeping in mind that UHV control was only achieved in the late 1950’s and that a major step in creating a theoretical background for PS occurred in the early 1960’s by the suggestion of the three step model [7]. Reliable spectra of gases adsorbed on surfaces were only obtained around 1970. Excellent overviews of the history of PS are given by Spicer [S] and by Feuerbacher et al.[IS]. In view of the overwhelming success of PS in surface science, it is not surprising that XPS has been used rather early for the study of electrochemically modified electrode surfaces. Winograd et al.[1&12] were the first to use this spectroscopy for the study of oxide formation on Pt electrodes and also for the investigation of metal underpotential deposition (UPD) on Pt. Although a standard surface analytical tool, XPS has not found a corresponding consideration in electrochemistry.