Synthesis and characterization of sulfonated poly(arylene ether sulfone) ionomers incorporating perfluorohexylene units for DMFC membranes
Synthesis and characterization of sulfonated poly(arylene ether sulfone) ionomers incorporating perfluorohexylene units for DMFC membranes
复制标题
用于 DMFC 膜的含有全氟己基单元的磺化聚（亚芳基醚砜）离聚物的合成和表征
DOI：
10.1007/s13233-010-0406-3
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发表时间：
2010
影响因子：
2.4
通讯作者：
Sang‐young Lee
中科院分区：
文献类型：
--
作者：
Su;Jong;Y. Hong;Sang‐young Lee
以1,6-双（4-氟苯基）-全氟己烷（FPPFH）和6f -双酚A （6F-BPA）与3,3′-二磺化4,4′-二氟二苯基砜（SDFDPS）为原料，直接聚合合成了一种新型磺化部分氟化基团聚芳醚砜（F-SPAES）。全面研究了氟化对DMFC应用中膜性能和膜电极组装（MEA）性能的影响，并与原始的SPAES样品进行了比较。刻意控制F-SPAES膜的疏水性和磺化程度，可以有效地抑制水的吸收和甲醇的渗透性，而几乎不影响质子电导率和IEC值。与原始的SPAES和Nafion®相比，这种膜性能的改善有助于F-SPAES的单细胞性能。
A new, sulfonated poly(arylene ether sulfone) ionomer with partially fluorinated groups (F-SPAES) was synthesized by the direct polymerization of 1,6-bis(4-fluororphenyl)-perfluorohexane (FPPFH) and 6F-bisphenol A (6F-BPA) with 3,3′-disulfonated 4,4′-difluorodiphenyl sulfone (SDFDPS). The effect of fluorination on the membrane properties and membrane-electrode assembly (MEA) performance for DMFC applications were investigated comprehensively and compared with the pristine SPAES sample. Deliberate control of the hydrophobicity as well as the degree of sulfonation in the F-SPAES membranes allows the effective suppression of water uptake and methanol permeability, while barely affecting the proton conductivity and IEC value. Such an improvement in the membrane properties contributes to the superior single cell performance of the F-SPAES compared to pristine SPAES and Nafion®.