Performance of tubular solid ozide fuel cell assembled with plasma-sprayed Sc2O3-ZrO2 electrolyte

摘要：

Ni-Al2O3 cermet supported tubular solid oxide fuel cell (SOFC) was fabricated by thermal spraying. The anode, electrolyte and cathode were deposited by plasma spraying and the Ni-Al2O3 cermet support was deposited by flame spraying to aim at reducing manufacturing cost. The test cell was assembled employing scandia stabilized zirconia (ScSZ) and yttria stabilized zirconia (YSZ) deposits as the electrolyte and influence of electrolytic Ohmic polarization on cells performance was investigated. The results showed that the maximum output power density increased through reducing the electrolyte thickness and increasing the electrical conductivity of electrolyte. The maximum output power density reached 0.89 W/cm2 with ScSZ electrolyte of 40 μm thick at 1000℃ in comparison of 0.76 W/cm2 obtained with YSZ electrolyte. The present results clearly revealed that the controlling polarization was electrode polarization for the plasma-sprayed single cell assembled with a thin APS ScSZ electrolyte of 40 urn thick. This fact indicates that the design and preparation of effective electrode in the SOFC assembled using thin electrolyte are more important to improve cell performance.

关键词： Solid ozide fuel cell Atmospheirc plasma spraying Scandia stabilized zirconia Electrical conductivity Coating

作者: Chang-Jiu Li Cheng-Xin Li Hui-Guo Long Ya-Zhe Xing Guan-Jun Yang

作者单位: State key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xian Jiaotong University, Xian Shaanxi 710049, PR China

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: 1575-1578

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）