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- Title
SO carry-over and sulphur formation in a SO-depolarized electrolyser.
- Authors
Santasalo-Aarnio, A.; Virtanen, J.; Gasik, M.
- Abstract
SO-depolarized electrolysis (SDE) is considered as one of the most efficient hydrogen production methods. To maximize H production in SDE, the phenomena occurring in the cell need to be understood and controlled. In this work, electrochemically driven SO carry-over and elemental sulphur formation in cathode space are analysed by various methods: electrochemical, titration and photon correlation spectroscopy (PCS) under different conditions during SDE operation. The results indicate that SO carry-over is a fast process in an operating SDE and is difficult to control with only working parameter optimization. The PCS method provides SO carry-over information at early stages compared to other methods. Moreover, PCS might be further implemented as an in situ method for SDE system control.
- Subjects
ELECTROLYTIC cells; HYDROGEN production; LIGHT beating spectroscopy; SULFUR dioxide; HYDROGEN evolution reactions
- Publication
Journal of Solid State Electrochemistry, 2016, Vol 20, Issue 6, p1655
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-016-3169-8