Title | Development and testing of a PEM SO2-depolarized electrolyzer and an operating method that prevents sulfur accumulation |
Publication Type | Journal Article |
Authors | Steimke JL, Steeper TJ, Colón-Mercado HR, Gorensek MB |
Journal | International Journal of Hydrogen Energy |
Volume | 40 |
Issue | 39 |
Pagination | 13281-13294 |
ISSN | 0360-3199 |
Abstract | The hybrid sulfur (HyS) cycle is being developed as a technology to generate hydrogen by splitting water, using heat and electrical power from a nuclear or solar power plant. A key component is the SO2-depolarized electrolysis (SDE) cell, which reacts SO2 and water to form hydrogen and sulfuric acid. SDE could also be used in once-through operation to consume SO2 and generate hydrogen and sulfuric acid for sale. A proton exchange membrane (PEM) SDE cell based on a PEM fuel cell design was fabricated and tested. Measured cell potential as a function of anolyte pressure and flow rate, sulfuric acid concentration, and cell temperature are presented for this cell. Sulfur accumulation was observed inside the cell, which could have been a serious impediment to further development. A method to prevent sulfur formation was subsequently developed. This was made possible by a testing facility that allowed unattended operation for extended periods. |
Notes | 'doi: 10.1021/acsenergylett.0c01132\n - I.Am.Hydrogen' |
URL | http://www.sciencedirect.com/science/article/pii/S0360319915021370 |
DOI | 10.1016/j.ijhydene.2015.08.041 |
Development and testing of a PEM SO2-depolarized electrolyzer and an operating method that prevents sulfur accumulation
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