中华医学超声杂志

应用化学 ›› 2009, Vol. 26 ›› Issue (09): 1015-1018.

• 研究论文 • 上一篇    下一篇

无机质子导体SnP2O7及其复合膜

车全通,王东,何荣桓   

  1. (东北大学理学院 沈阳 110004)
  • 收稿日期:2008-08-27 修回日期:2009-01-04 出版日期:2009-09-10 发布日期:2009-09-10
  • 通讯作者: 何荣桓，女，博士，教授; E-mail:herh@mail.neu.edu.cn; 研究方向：膜电解质材料
  • 基金资助:
    “八六三”计划资助项目(2006AA03Z224)

Inorganic proton conductor SnP2O7 and its hybrid membranes

 CHE Quan-Tong, WANG Dong, HE Rong-Huan   

  1. (College of Science,Northeastern University,Shenyang 110004)
  • Received:2008-08-27 Revised:2009-01-04 Published:2009-09-10 Online:2009-09-10

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摘要：

合成了无机质子导体SnP2O7，测定了其从室温到250 ℃不加湿条件下的电导率，170 ℃时，SnP2O7的电导率最高为0.053 S/cm。通过溶液浇铸法，分别制备了SnP2O7与聚偏氟乙烯 (PVDF) 及磺化聚醚醚酮 (SPEEK) 的复合膜。210 ℃时，SnP2O7质量分数为60%的SnP2O7/PVDF和SnP2O7/SPEEK复合膜的电导率分别为9.2×10-5 S/cm及9.3×10-5 S/cm。对SnP2O7及其复合膜的质子传导机理，进行了初步探讨。测定了复合膜的机械强度，130 ℃时SnP2O7/PVDF的断裂拉伸强度明显优于SnP2O7/SPEEK复合膜。

关键词: 无机质子导体, 复合膜, 电导率, 拉伸强度

Abstract:

Inorganic proton conductor SnP2O7 was synthesized. Its conductivity was measured from ambient temperature to 250℃ without humidification. At 170℃, a highest conductivity of 0.053 S/cm was reached for SnP2O7. Hybrid membranes of SnP2O7 with polyvinylidenefluoride (PVDF) or sulfonated poly (ether ether) ketone (SPEEK) were prepared with a method of membrane casting from their solutions, respectively. For the hybrid membranes containing 60wt% SnP2O7, the conductivity at 210℃ was 9.2×10-5 S/cm for SnP2O7/PVDF, and was 9.3×10-5 S/cm for SnP2O7/SPEEK with a sulfonation degree of 51%, respectively. The proton conduction mechanism of SnP2O7 as well as its hybrid membranes was discussed. The mechanical strength of the hybrid membranes was measured. The tensile strength at break of SnP2O7/PVDF membranes was much higher than that of SnP2O7/SPEEK membranes at 130℃.

Key words: inorganic proton conductor, hybrid membrane, conductivity, tensile strength

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