![]() ![]() ![]() Via oxygen ion vacancies in the crystal lattice of the electrolyte, the oxygen ion is transported to the electrolyte–anode interface due to the applied DC potential. Through a combination of thermal dissociation and electrocatalysis, an oxygen atom is liberated from the COĢ molecule and picks up two electrons from the cathode to become an oxide ion (O 2–). COĢ diffuses through the porous electrode ( cathode) and reaches the vicinity of the electrode-electrolyte boundary. ![]() ![]() A thin nonporous disk of YSZ (solid electrolyte) is sandwiched between two porous electrodes. A solid oxide electrolysis cell works on the principle that, at elevated temperatures, certain ceramic oxides, such as yttria-stabilized zirconia (YSZ) and doped ceria, become oxide ion (O 2–) conductors. The conversion process requires a temperature of approximately 800 ☌ (1,470 ☏). MOXIE acquires, compresses, and heats Martian atmospheric gases using a HEPA filter, scroll compressor, and heaters alongside insulation, then splits the carbon dioxide ( COĢ) molecules into oxygen (O) and carbon monoxide (CO) using solid oxide electrolysis, where the O atoms combine to form gaseous oxygen ( O Other contributors include Imperial College London, Space Exploration Instruments LLC, Destiny Space Systems LLC, the Niels Bohr Institute at the University of Copenhagen, Arizona State University, and the Technical University of Denmark. Along with MIT and JPL, major contributors are O圎on Energy (previously Ceramatec, Inc.) and Air Squared. The project manager was Jeff Mellstrom from the NASA/Caltech Jet Propulsion Laboratory (JPL). The deputy PI was former NASA astronaut Jeffrey Hoffman from the Department of Aeronautics and Astronautics at MIT. The Principal Investigator (PI) of MOXIE was Michael Hecht from the Haystack Observatory at Massachusetts Institute of Technology (MIT). The MIP flight demonstration was postponed when the Mars Surveyor 2001 lander mission was cancelled after the Mars Polar Lander mission failed. MIP was intended to demonstrate In-Situ Propellant Production (ISPP) on a laboratory scale using electrolysis of carbon dioxide to produce oxygen. MOXIE builds upon an earlier experiment, the Mars In-situ propellant production Precursor (MIP), which was designed and built to fly on the Mars Surveyor 2001 Lander mission. MOXIE's objective was to produce oxygen of at least 98% purity at a rate of 6–10 grams per hour (0.21–0.35 oz/h) and to do this at least ten times, so the device can be tested in a range of times of the day, including at night, and in most environmental conditions, including during a dust storm. The experiment was a collaboration between the Massachusetts Institute of Technology, the Haystack Observatory, the NASA/ Caltech Jet Propulsion Laboratory, with O圎on Energy. The technology may be scaled up for use in a human mission to the planet to provide breathable oxygen, oxidizer, and propellant water may also be produced by combining the produced oxygen with hydrogen. This was the first experimental extraction of a natural resource from another planet for human use. On April 20, 2021, MOXIE produced oxygen from carbon dioxide in the Martian atmosphere by using solid oxide electrolysis. The Mars Oxygen In-Situ Resource Utilization Experiment ( MOXIE) was a technology demonstration on the NASA Mars 2020 rover Perseverance investigating the production of oxygen on Mars. gov /mars2020 /mission /instruments /moxie / ISRU (in situ resource utilization) experimental technology Mars Oxygen In-Situ Resource Utilization Experiment (MOXIE) ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |