Free Volume and Ozygen Permeability in Polymers Related to Polymer Electrolyte Full Cells

摘要：

Nafion and sulfonated poly(ether sulfone) SPES are used as the membrane in polymer electrolyte fuel cells (PEFC). Permeation of oxygen and hydrogen through the membrane reduces the efficiency of PEFC, so that understanding the mechanism of gas permeation in sulfonated polymers is of essential importance. Free volume holes in polymers play a crucial role in determining its gas permeability. So, free volume and oxygen permeability of Nafion membranes in many forms (H+, Na+, and K+) and SPES with different ionic exchange capacities have been investigated. Free volume quantified using the positron annihilation lifetime technique and oxygen permeability were measured as a function of temperature.

作者: Hamdy F.M.Mohamed A.Ohira Y.Kobayashi

作者单位: FC-Cubic,National Institute of Advanced Industrial Science and Technology (AIST),Tokyo 135-0064,Japa FC-Cubic,National Institute of Advanced Industrial Science and Technology (AIST),Tokyo 135-0064,Japa NMIJ,AIST,Tsukuba,Ibaraki 305-8565,Japan

会议类型: 国际会议

会议名称: 第九届国际正电子与正电子素国际会议(9th International Workshop on Positron and Positronium Chemistry)(PPC–9)

会议地点: 武汉

会议语种:英文

页码: 15

在线出版日期: 2008-05-11（万方平台首次上网日期，不代表论文的发表时间）