Development of in situ time resolved XPS and its application for electrochemical reactions

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K13941
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: National Institute for Materials Science
• Principal Investigator: Masuda Takuya 国立研究開発法人物質・材料研究機構, 先端材料解析研究拠点, グループリーダー (20466460)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 電気化学 / 表面科学 / その場観察

Outline of Final Research Achievements

Recently, X-ray photoelectron spectroscopy (XPS) which intrinsically requires vacuum was applied by our research group for in situ analyses of surface chemical states at solid/liquid interfaces during electrochemical reactions. In order to utilize this technique for a time resolved analysis of surface chemical states in situ in real time, a detection system of our laboratory base XPS was modified by utilizing an oscilloscope with a fast processing unit as a feasibility study. As a result, peak intensities and total counts of input electrons were improved by about two times, which can significantly improve the sensitivity and decrease the acquisition time. Now, further improvement is under consideration by using an external signal amplifier.

Free Research Field

電気化学、表面科学