Fluorinated-sulfonated polyaryl ether block copolymer/polyethylene composite membranes for fuel cell applications

摘要：

In this study, five fluorinated-sulfonated poly (arylene ether sulfone) (FS-PAES) block copolymers containing perfluorocyclobutane (PFCB)-were prepared via three synthetic steps; the trifluorovinyloxy end-capped biphenylene sulfonable at room temperature monomer and sulfonyl biphenylene non-sulfonable at room temperature monomer were first prepared. Secondly, sulfonatable biphenylene monomers were heated to form oligomer blocks MW: 13,000 and then, non-sulfonable sulfonyl monomer were added to give the PAES block copolymers. Finally, the FS-PAES were obtained via post-sulfonation using chlorosulfonic acid at room temperature. The electrochemical properties- ion exchange capacity (IEC), water uptake, and ion conductivity- of FS-PAES block copolymers were evaluated. The composite membranes were prepared using FS-PAES block copolymer and porous polyethylene PE film. Membrane and electrode assembly (MEA)s were made with the composite membranes and tested for DMFC and PEMFC applications. It was confirmed the FS-PAES block copolymer /PE composite membranes could be an alternative to Nafion-115 membranes.

关键词： fluorinated-sulfonated poly (arylene ether sulfone) block copolymers water uptake ion conductivity composite membranes polyethylene film MEA test

作者: Jeong-Hoon Kim Bong-Jun Chang Min-Chul Yoo Yong-Taek Lee Soo-Bok Lee

作者单位: Interface Materials & Eng.Lab.Division of Advanced Chemical Technology, Korea Research Institute of Interface Materials & Eng.Lab.Division of Advanced Chemical Technology, Korea Research Institute of Department of Chemical Engineering, Chung-Nam National University, Yuseong, Daejeon 305-764, Republi

会议类型: 国际会议

会议名称: The 5th International Conference on Separation Science and Technology(第五届国际分离科学与技术会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-14（万方平台首次上网日期，不代表论文的发表时间）