In-situ study of operating SOFC LSM/YSZ cathodes under polarization by photoelectron microscopy

摘要：

The surface chemistry of operating model SOFC cathodes with LSM catalyst and YSZ electrolyte was studied in-situ by photoelectron microscopy. The electrochemical activation of SOFC cathodes under cathodic biasing or polarization was explained by the finding that partially reduced manganese oxide species rapidly spread from the triple phase boundary over the electrolyte surface, thereby providing high electronic conductivity in the zirconia surface scale and promoting the direct incorporation of oxygen from the gas into the electrolyte.

关键词： SOFC cathode Polarization Surface LSM YSZ

作者: M.Backhaus-Ricoult K.Adib T.St.Clair B.Luerssen L.Gregoratti A.Barinov

作者单位: Corning Incorporated, Sullivan Park, Corning NY 14831, USA Physikalisch-Chemisches Institut, Justus Liebig Universitaet, 35392 Giessen, Germany Sinchrotone Elettra, 34012 Basovizza-Trieste, Italy

会议类型: 国际会议

会议名称: The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)

会议地点: 上海

会议语种:英文

页码: 891-895

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）