Carbon dioxide electrolysis with solid oxide electrolyte cells for oxygen recovery in life support systemsThe direct electrochemical reduction of carbon dioxide (CO2) is achieved without catalysts and at sufficiently high temperatures to avoid carbon formation. The tubular electrolysis cell consists of thin layers of anode, electrolyte, cathode and cell interconnection. The electrolyte is made from yttria-stabilized zirconia which is an oxygen ion conductor at elevated temperatures. Anode and cell interconnection materials are complex oxides and are electronic conductors. The cathode material is a composite metal-ceramic structure. Cell performance characteristics have been determined using varying feed gas compositions and degrees of electrochemical decomposition. Cell test data are used to project the performance of a three-person CO2-electrolysis breadboard system.
Document ID
19890040469
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Isenberg, Arnold O. (Westinghouse Electric Corp. Pittsburgh, PA, United States)
Cusick, Robert J. (NASA Johnson Space Center Houston, TX, United States)