Proton conductivity of CeP2O7 for intermediate temperature fuel cells

摘要：

A single phase new proton conductive electrolyte of CeP2O7 was synthesized. The electrical conductivity was measured in the temperature range of 50-250℃ under different atmospheres, and the conductivity of CeP2O7 increased with the increasing of temperature and kept above 10-2 S/cm in the temperature range of 150-250℃. Proton transport numbers of this material under various conditions were estimated based on the ratio of the electromotive force to the theoretical value. And the mechanism of proton conductivity under various conditions was also discussed. A single H2/O2 fuel cell with CeP2O7 as electrolyte membrane exhibited a reasonable power density of 25 mW/cm2 at 200℃, showing potential applications.

关键词： Proton conductor Electrolyte CeP2O7 Fuel cell Pyrophosphate

作者: Xiufu Sun Shaorong Wang Zhenrong Wang Xiaofeng Ye Tinglian Wen Fuqiang Huang

作者单位: Shanghai Institute of Ceramic, Chinese Academy of Science, 1295 Dingxi Road, Shanghai 200050, 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: 1138-1141

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）