Raman EC Flow Cell Attachment for SPE holder
This setup combines two classical analytical techniques such as electrochemistry using Screen-Printed Electrodes and Raman spectroscopy, to obtain in-situ chemical information about the reactions taking place during an electrochemical experiment. During an experiment Raman laser is focused onto the surface of a thin film working electrode through a transparent Sapphire (or quartz) window and thin layer of electrolyte (total optical path of 3 mm). The electrolyte thickness of 2 mm ensures free diffusion of ions (e.g. protons) and their counter ions.
The assembled set consisting of Screen-Printed Electrode Holder, Raman EC Flow Cell Attachment and the reservoir is gas- and liquid-tight. The reservoir is composed of Basic Electrochemical Cell (BEC 50 mL) with two additional plugs. It enables further analysis of the solution or conducting reference electrochemical measurement using classical electrodes (6 mm dia., not included in the set). The attachment elements are constructed with materials that are chemically resistive to a wide range of electrolytes (PEEK, PFA/ETFE). Other materials such as PTFE, Titanium, Stainless Steel, etc., are available on request. The Flow Cell Attachment well fits aqueous (EPDM O-Rings) and organic solvent (FFKM O-Rings) electrolyte requirements.
This cell can be used to track kinetic phenomena such as the near-surface proton concentration changes during oxidation and reduction reaction at working electrode. It can be also used to identify materials such as carbon, metal oxides, polymers and electrolytes, and to determine their structure and distribution. The Raman EC Flow Cell Attachment is installed on the guide rails of the Screen-Printed Electrode Holder. The tubing is connected to the peristaltic pump (not included in the set) which drives the fluid from the reservoir through the cell (above the electrode assembly) and then returns it to the reservoir.
Operating Video Manual:
tubing size: 1/16" OD x .040" ID (1.6mm OD x 1.0mm ID)
maximum electrolyte volume in the reservoir: 40 mL
electrode plug diameter in the reservoir: 6 mm