CAD model of the Scanning Flow Cell including spatial distribution of the electrodes

Scanning Flow Cell (SFC) is an electrochemical technique, based on the principle of channel electrode. The electrolyte is continuously flowing over a substrate that is introduced externally on translation stage. In contrast to the reference and counter electrode that are integrated in the main channel or placed in side compartments connected with a salt bridge.

SFC utilizes V-formed geometry with a small opening on the bottom (in range of 0.2-1mm diameter) used to establish the contact with sample. The convective flow is sustained also in non-contact mode of operation that allows easy exchange of the working electrode.[1]

Application

The SFC is employed for combinatorial and high-throughput electrochemical studies. Due to its non-homogenous flow profile distribution, it is currently used for comparative kinetic studies. SFC is predominantly used for coupling of electrochemical measurements with post analytical techniques like UV-Vis, ICP-MS, ICP-OES etc. This makes possible a direct correlation of electrochemical and spectrometric signal. This methodology was successfully applied for corrosion studies.[2][3]

References

  1. ↑ "Scanning Flow Cell". www.mpie.de. Retrieved 2023-09-23.
  2. ↑ Topalov, A.A.; and Katsounaros, I.; Michael, A.; Cherevko, S.; Meier, J.C.; Klemm, S.O.; Mayrhofer, K.J.J. (2012). "Dissolution of Platinum: Limits for the Deployment of Electrochemical Energy Conversion?". Angewandte Chemie International Edition. 51 (50): 12613–12615. doi:10.1002/anie.201207256. ISSN 1521-3773. PMC 3556695. PMID 23124819.
  3. ↑ Klemm, S.O.; Topalov, A.A.; Laska, C.A.; Mayrhofer, K.J.J. (2011). "Coupling of a high throughput microelectrochemical cell with online multielemental trace analysis by ICP-MS". Electrochemistry Communications. 13 (12): 1533–1535. doi:10.1016/j.elecom.2011.10.017. ISSN 1388-2481.
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