Abstract
Developed methods in electrochemical mass spectroscopy (MS) have become a powerful tool in electroanalysis and electrochemical kinetics: Direct connection of the electrochemical cell with the MS system via a porous and hydrophobic electrode offers a valuable extension of cyclic voltammetry. For a quantitative analysis of gaseous electrolysis products, G. Kreysa et al. presented an experimental setup where the product gas is transferred from the electrochemical cell to the mass spectrometer via a carrier gas. The original experimental procedure allows the analysis of electrochemical processes at porous noble metal electrodes prepared by applying a thin layer of a finely divided metal suspension on a nonwetting PTFE membrane. A principal extension of electrochemical on-line mass spectroscopy to the study of compact material as a working electrode has been developed recently by W. Vielstich et al. In conventional potentiodynamical experiments on electrode materials the current is due to different Faradaic processes occurring simultaneously on the electrode surface.
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