An ultra-high vacuum electrochemical flow cell for in situ/operando soft X-ray spectroscopy study

作者：Bora Debajeet K^*; Glans Per Anders; Pepper John; Liu Yi Sheng; Du Chun; Wang Dunwei; Guo J H

来源：Review of Scientific Instruments, 2014, 85(4): 043106.

DOI：10.1063/1.4870795

An in situ flow electrochemical cell has been designed and fabricated to allow better seal under UHV chamber thus to achieve a good signal to noise ratio in fluorescence yield detection of X-ray absorption spectra for spectroelectrochemical study. The cell also stabilizes the thin silicon nitride membrane window in an effective manner so that the liquid cell remains intact during X-ray absorption experiments. With the improved design of the liquid cell, electrochemical experiments such as cyclic voltammetry have been performed for 10 cycles with a good stability of sample Also an operando electrochemical experiment during photoelectrochemistry has been performed on n-type hematite electrode deposited on silicon nitride The experiment allows us to observe the formation of two extra electronic transitions before pre edge of O K-edge spectra.

• 出版日期2014-4