Presentation Information
[15p-PB2-38]Steam Electrolysis Characteristics of Ag-doped Perovskite-Type Manganite Oxide Electrodes for Solid Oxide Electrolysis Cells
〇Toshiki Miyazaki1, konosuke Mitsushio1, Satoshi Sugano1, Takaaki Sakai2, Masatsugu Oishi1 (1.Tokushima Univ., 2.AIST)
Keywords:
steam electrolysis,fuel cell
Steam electrolysis using solid oxide electrolysis cells SOECs has attracted significant attention because of its high efficiency achieved by high temperature operation. However the air electrode resistance in SOECs is relatively large and the development of novel air electrode materials is required. In this study a novel air electrode material LaAgMnO3 LAM was investigated for SOEC performance. It was confirmed that the LAM single phase electrode delaminated from the electrolyte under SOEC operating conditions. By contrast a composite electrode composed of LAM and yttria stabilized zirconia YSZ mixed at a weight ratio of 7 to 3 formed a stable electrode electrolyte interface without delamination.