P_2O_5掺杂的磷钨酸常温电解质  

P_2O_5 Doped Phosphotungstic Acid (PWA) Electrolyte at Room Temperature

作　　者：郭贵宝[1,2] 周芬[3] 孟淑敏[3] 安胜利[1,3] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]内蒙古科技大学生物与化学工程学院 [3]内蒙古科技大学材料与冶金学院,包头014010

出　　处：《应用化学》2009年第1期78-81,共4页Chinese Journal of Applied Chemistry

基　　金：内蒙古自治区优秀学科带头人基金资助项目(20071103);高校青年教师教学科研奖励计划项目(2002)

摘　　要：以磷钨酸(PWA)为基质,加入适量的P2O5,制备了P2O5/PWA电解质。采用交流阻抗谱方法研究了不同质量分数P2O5电解质的导电性能及相对湿度对电导率的影响。结果表明,质量分数为7%的P2O5/PWA电解质,室温电导率达到0.045 S/cm;相对湿度在20%～70%范围内电解质的电导率变化不大;在40℃下长时间放置,电解质的质量损失小于2%,表明其常温保水性好。A novel electrolyte of phosphotungstic acid（PWA） doped with P2O5 was prepared. The effects of P2O5 concentration and relative humidity on the conductivity of the electrolyte were investigated by the impedance at room temperature. The results indicate that the conductivity of 7% P2O5/PWA electrolyte is 0. 045 S/cm at room temperature. The conductivity of the electrolyte changes slightly at a relative humidity range of 20% - 70%. The mass loss of P2O5/PWA electrolyte heated to 40 ℃ is less than 2%, which indicated that if has a good ability to retain water.

关 键 词：气体传感器 磷钨酸 电解质 保水性 

分 类 号：O613.6[理学—无机化学] TB321[理学—化学]