@inproceedings{oai:jaxa.repo.nii.ac.jp:00038703, author = {桜井, 誠人 and 島, 明日香 and 大西, 充 and Sakurai, Masato and Shima, Asuka and Ohnishi, Mitsuru}, book = {第58回宇宙科学技術連合講演会講演集, Proceedings of 58th Space Sciences and Technology Conference}, month = {Nov}, note = {第58回宇宙科学技術連合講演会(2014年11月12日-14日. 長崎ブリックホール), 長崎市, 長崎県, To support long-duration manned space missions beyond Earth orbit, recycling life support systems will be necessary to reduce the mass of consumables required.JAXA is therefore developing life support technologies for future manned space missions such as water purification, CO2 reduction and oxygen generation.JAXA is currently studying an air revitalization system for an on-orbit demonstration on the International Space Station (ISS) early in the extended ISS operation period (2015-2020) to support proposed post-ISS missions such as manned lunar or asteroid exploration and an Earth-Moon Lagrange point (EML1) space station. Regenerative functions include oxygen recovery from carbon dioxide using a combination of CO2 reduction by the Sabatier process and O2 generation by electrolysis. Water electrolysis is a key technology because the hydrogen it produces is used for CO2 reduction and the oxygen is essential for human respiration. A simple method for obtaining dry oxygen from electrolysis is aiso important. This paper presents the air re-vitalization system for the demonstarator and gives details of water electrolysis in microgravity. In this paper, we investigate SPE (solid polymer electrolyte) water electrolysis and discuss the 'Cathode Feed' operation of an electrolyzer. Although water is usually supplied to the anode side of ground-based electrolysis cells (anode feed), we adopt cathode feed to obtain dry oxygen. The performance of the cathode feed cell can achieve its design target by flushing the gas bubbles that adhere to the electrode. A membrane type water/gas separator consisting of hydrophilic and hydrophobic membranes was used., 資料番号: AC1500063000, レポート番号: JSASS-2014-4389}, publisher = {日本航空宇宙学会(JSASS), The Japan Society for Aeronautical and Space Sciences (JSASS)}, title = {有人宇宙探査のため酸素製造に関する研究}, year = {2014} }