Development of in situ electrochemical / near-infrared spectroscopic measurements for investigation of electrode I electrolyte interface

Although in situ infrared spectroscopic studies on the molecular structure of electrode Ielectrolyte interface widely been performed in the mid-IR区域，an infrared energy loss due to the strong absorption of solvent water molecules largely restrictedelectrochemical cell arrangements. In order to overcome the situation，我们已经开发了situ near-infrared speco -electrochemical techniques this研究. It was应用黄金电子接口aqueous electrolyte interface我们已经成功地观察了水分子与electrolyte anions结果被发现与那些以前在中间的区域，在situ infrared相关的条件反射性吸收spectroscopy也适用于electrodes such as liquid mercury andgraphite. And the adsorption of perchlorate And /or carbonate anions observed as a function ofelectrode potential. results are expected to provide fundamental information for furtherdevelopment of electrochemical double-layer theory Adsorption behavior of alkyl viologens on gold单crystal electrodes was studied by cyclic voltammetry and in situ infrared spectroscopy. Anumber of spike like redox waves due to adsorbed viologen molecules appeared on their CVs，which changed in a complicated manner d。Pending on the alkyl chain length and on crystallographic orientations. Characteristic voltammogramswere also observed on a highly oriented pyrolitic graphite (HOPG) electrode，and the molecular orientation of adsorbed viologens were determined by infrared spectroscopy。

Although in situ infrared spectroscopic studies on the molecular structure of electrode I electrolyte interface have widely been performed in the mid-IR region, an infrared energy loss due to the strong absorption of solvent water molecules largely restricted electrochemical cell arrangements. In order to overcome the situation, we have developed in situ near-infrared spectro-electrochemical techniques this research. It was applied to the gold electrode I aqueous electrolyte interface, and we have successfully observed the water molecules associated to the electrolyte anions. The result was found to be consistent with those previously obtained in mid-IR region.In situ infrared reflection absorption spectroscopy was also applied to electrodes such as liquid mercury and graphite. And the adsorption of perchlorate and/or carbonate anions was observed as a function of the electrode potential. The results are expected to provide fundamental information for further development of electrochemical double-layer theory・Adsorption behavior of alkyl viologens on gold single crystal electrodes was studied by cyclic voltammetry and in situ infrared spectroscopy. A number of spike like redox waves due to adsorbed viologen molecules appeared on their CVs, which changed in a complicated manner d。Pending on the alkyl chain length and on crystallographic orientations. Characteristic voltammograms were also observed on a highly oriented pyrolitic graphite (HOPG) electrode, and the molecular orientation of adsorbed viologens were determined by infrared spectroscopy.