| Autor: |
Dickson, David, Emadi, Nasim, Dreyer, Christopher, Jackson, Greg, Hollist, Michele, Larsen, Dennis, Czernichowski, Piotr, Wilson, Merrill, Yarosh, Ainsley, Hartvigsen, Joseph |
| Zdroj: |
ECS Transactions; May 2023, Vol. 111 Issue: 6 |
| Abstrakt: |
Federal space agencies across the globe have prioritized development of in-situ resource utilization (ISRU) technology, such as propellants from lunar ice, to support space activities. High-temperature, solid oxide electrolysis cell (SOEC) systems integrated with an efficient balance-of-plant (BOP) have the potential to produce H2and O2at specific energy (kWhelec/kgH2) lower than conventional liquid-phase alkaline and PEM electrolysis systems, due to lower voltages for steam electrolysis (vs. liquid H2O). This NASA-sponsored collaboration explored the feasibility of achieving such low specific energy in a high-temperature SOEC system operating in a cryo-vacuum characteristic of permanently shadowed craters on the lunar surface where H2O ice can be found. A lab-scale »2.5-kWelecSOEC stack and BOP achieved a specific energy < 50 kWhelec/kgH2at a production rate of > 0.075 kgH2/h operating in a cryo-vacuum chamber. System-level simulation models of the lab-scale SOEC stack were benchmarked with experimental tests and used to explore scaling of a system for lunar deployment. The lab-scale tests and scale-up modeling suggest a pathway to a MW-scale SOEC system that can achieve < 46 kWhelec/kgH2with relatively low specific mass (kgsystem/(kgH2/h)). |
| Databáze: |
Supplemental Index |
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