摘要
采用浓硫酸和发烟硫酸的混合物作磺化剂得到不同磺化度的磺化杂萘联苯聚醚酮(SPPEK),考察了不同磺化度的SPPEK膜的导电和阻醇特性.磺化度为73%的膜在测试的温度范围内膜的电导率数量级在10-2S/cm,其甲醇透过系数约比Nafion115膜低一个数量级,如果以质子传递通量和甲醇传递通量之比定义为综合指标,SPPEK膜的综合性能比Nafion115膜高3.3倍.
Sulfonated poly（phthalazinone ether ketone） with various sulfonation degree were synthesized by reaction of PPEK with mixtures of fuming sulfuric acid and concentrated sulfuric acid with different acid rations as sulfonating agent. Their proton conductivity and methanol permeability as a function of the sulfonation degree were investigated. For 73 % degree of sulfonation, proton conductivity reaches 10^-2 S/cm at all the temperature range tested. The methanol permeability of the 73 % degree of sulfonation SPPEK membrane is about one order of magnitude lower compared with that of Nafion 115 membrane. If the ratio （σ/P） is used to characterize the performance of a membrane for DMFC, the ratio of the SPPEK membrane is about 3.3 times higher than that of Nafion 115 membrane at 80 ℃.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2005年第4期13-16,20,共5页
Membrane Science and Technology
基金
国家自然科学基金资助项目(29976033)
科技部"973"计划项目(G20000264)
关键词
直接甲醇燃料电池
磺化杂萘联苯聚醚酮
质子电导率
透醇性能
direct methanol fuel cell （DMFC）
sulfonated poly（phthalazinone ether ketone）
proton conductivity
methanol permeability
