中文摘要：

采用固相法合成了Sn0.94Sc0.06P2O7.XRD测试结果表明Sn0.94Sc0.06P2O7表现为单一立方SnP2O7相结构.采用电化学工作站对样品的中温电性能（50～250℃）进行了研究.结果表明,样品在湿润H2气氛中200℃下,电导率达到最大值（2.8×10^-2 S· cm^-1）.以样品为固体电解质组装氢-空气燃料电池,性能测试表明,在150℃时,其最大输出功率密度为25.02 mW·cm^-2（厚度：1.7 mm）,表明Sn0.94Sc0.06P2O7是一种潜在的中温燃料电池的电解质材料.

英文摘要：

Sn0.94Sc0.06P2O7 was synthesized by solid-state reaction method. The XRD result confirmed that the sample of Sn0.94Sc0.06P2O7 showed a single cubic SnP2 O7 phase structure. The intermediate temperature conduction be- havior was investigated by AC impedance spectroscopy in the temperature range of 50--250 ℃. The highest conduc- tivity was observed to be 2. 8×10^- 2 S · cm^-1 under wet H2 atmosphere at 200 ℃. The H2/air fuel cell using Sn0.94Sc0.06P2O7 as an electrolyte （1.7 mm in thickness） generated the maximum power density of 25.02 mW · cm^-2 at 150 ℃. The result indicated that Sn0.94Sc0.06P2O7 may be a potential electrolyte candidate for intermediate temperature fuel cell.