Sn_(1-x)Ta_xP_2O_7/PTFE复合电解质的制备及中温电性能  

Preparation and intermediate temperature electrical property of polytetrafluoroethylene/Sn_(1-x)Ta_xP_2O_7 composite electrolyte

作　　者：沈晓宝 王洪涛[1,2] 张文保[1,2] 王永忠[1,2] 刘杰[1,2] 孙林[1,2] 

机构地区：[1]阜阳师范学院化学与材料工程学院,阜阳236037 [2]安徽环境污染物降解与监测省级重点实验室,阜阳236037

出　　处：《化工新型材料》2017年第4期133-135,共3页New Chemical Materials

基　　金：国家自然科学基金青年项目(51402052);安徽省高等学校自然科学基金项目(2015KJ002;2015KJ005和2015KJ011)

摘　　要：采用固相法合成了有机-无机复合电解质聚四氟乙烯(PTFE)/Sn_(1-x)Ta_xP_2O_7。X射线衍射结果表明Sn_(1-x)Ta_xP_2O_7和PTFE复合没有发生反应生成新物质;热分析表明样品稳定性良好;扫描电镜显示样品致密性良好。采用电化学工作站对样品的中温电性能(40~200℃)进行了研究,结果表明:Sn_(0.85)Ta_(0.15)P_2O_7/PTFE在160℃下,电导率达到最大值为:2.8×10^(-2)S/cm。以Sn_(0.85)Ta_(0.15)P_2O_7/PTFE组装H_2/O_2燃料电池性能测试表明,在150℃下,最大输出功率密度为25.8mW/cm^2(厚度:1.8mm)。Firstly,the new organic-inorganic composite electrolytes Sn_（1-x）Ta_xP_2O_7/PTFE were prepared by a solidstate reaction method.XRD showed that there were only peaks corresponding well to Sn_（1-x）Ta_xP_2O_7 and PTFE,without any formation of other substances.TGA proved that the sample had a high stability.SEM images showed that the composite electrolytes were sufficiently dense.The intermediate temperature conduction behavior was investigated by AC impedance spectroscopy in the temperature range of 40~200℃.The highest conductivity was observed to be 2.8×10^（-2）S/cm for Sn_（0.85）Ta_（0.15）P_2O_7/PTFE at 160℃.The H_2/O_2 fuel cell using Sn_（0.85）Ta_（0.15）P_2O_7/PTFE as an electrolyte（1.8mm in thickness）generated the maximum power density of 25.8mW/cm^2 at 150℃.

关 键 词：焦磷酸锡 复合电解质 电导率 燃料电池 

分 类 号：TM911.4[电气工程—电力电子与电力传动]