Phenolphthalein-based Poly(arylene ether sulfone nitrile)s Multiblock Copolymers As Anion Exchange Membranes for Alkaline Fuel Cells
Phenolphthalein-based Poly(arylene ether sulfone nitrile)s Multiblock Copolymers As Anion Exchange Membranes for Alkaline Fuel Cells
复制标题
酚酞基聚（亚芳基醚砜腈）多嵌段共聚物作为碱性燃料电池阴离子交换膜
DOI：
10.1021/acsami.5b01475
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发表时间：
2015-04-22
影响因子：
9.5
通讯作者：
Liu, Qing Lin
中科院分区：
文献类型：
--
作者：
Lai, Ao Nan;Wang, Li Sha;Liu, Qing Lin
合成了一系列含1-甲基咪唑基的酚酞基聚芳醚砜-S多嵌段共聚物(ImPESN)，用于制备碱性燃料电池用阴离子交换膜。离子基团被选择性地和密集地引入到作为亲水链段的酚酞单元上，从而允许：形成离子簇。为了提高AEMS的尺寸稳定性，在疏水链段引入了强极性的丁腈基团。原子力显微镜和小角X射线散射证实，良好控制的多嵌段结构导致了清晰的疏水/亲水相分离和相互连接的离子传输通道。低溶胀的ImPESN膜表现出较高的吸水率、较高的氢氧化物离子导电性以及良好的机械、热稳定性和碱性稳定性：膜的离子电导率在30~80℃范围内为3.85-14.67×10(-2)S.cm(-1)；此外，带有ImPESN膜的单个H2/O-2燃料电池在60℃时的开路电压为0.92V，最大功率密度为66.4 mW cm(-2)。
A series of phenolphthalein-based poly(arylene ether sulfone nitrile)s (PESN) multiblock copolymers containing 1 methylimidazole groups (ImPESN) were synthesized to prepare anion exchange membranes (AEMs) for alkaline fuel cells. The Ion groups were introduced selectively and densely On the unit of phenolphthalein as the hydrophilic segments, allowing: for the formation of ion clusters. Strong polar nitrile groups were introduced into the hydrophobic segments with the intention of improving the dimensional stability of the AEMs. A well-controlled multiblock structure was responsible for the well-defined hydrophobic/hydrophilic phase Separation and interconnected ion-transport channels, as confirmed by atomic force microscopy and small angle X-ray scattering. The ImPESN Membranes With low swelling showed a relatively high water uptake, high hydroxide ion conductivity together with good mechanical, thermal and alkaline stability: The ionic conductivity of the membranes was in the range of 3.85-14.67 x 10(-2) S. cm(-1) from 30 to 80 degrees C. Moreover; a. single H-2/O-2 fuel cell with-the ImPESN membrane showed an open circuit voltage of 0.92 V and a maximum power density of 66.4 mW cm(-2) at 60 degrees C.