【摘要】 合成了复合电解质Sn_0.85Ga_0.15P₂O₇/聚苯醚(Sn_0.85Ga_0.15P₂O₇/PPO)。通过X射线衍射仪（XRD）和扫描电镜（SEM）对产物进行分析,XRD结果表明Sn_0.85Ga_0.15P₂O₇和PPO复合没有发生反应生成新物质,SEM结果表明样品致密性良好。采用电化学工作站对Sn_0.85Ga_0.15P₂O₇/PPO的中温电性能（100³50℃）进行了研究。电化学结果表明,湿润氧气气氛中Sn_0.85Ga_0.15P₂O₇/PPO在300℃即可达到最大值1.2×10^-2S/cm。其在300℃开路条件下的电解质阻抗、极化阻抗分别为8.69和0.51Ω·cm²。H₂/O₂燃料电池性能测试表明,在0.54V时有最大输出功率密度60.5mW/cm²。更多还原

【Abstract】 Firstly,the new organic-inorganic composite electrolyte PPO/Sn_0.85Ga_0.15P₂O₇ was prepared.XRD showed that there were only peaks corresponding well to Sn_0.85Ga_0.15P₂O₇,without any formation of other substances.SEM images showed that the electrolyte was sufficiently dense.The intermediate temperature conduction behavior was investigated by AC impedance spectroscopy in the temperature range of 100³50℃.The highest conductivity was observed to be 1.2×10^-2 S/cm for SG15 P-PPO in wet oxygen at 300℃.The ohmic resistance and interfacial polarization resistance of SG15 P-PPO at 300℃ under open circuit condition was 8.69Ω·cm² and 0.51Ω·cm²,correspondingly.The H₂/O₂ fuel cell generated the maximum power density of 60.5 mW/cm² at 0.54V.更多还原