双哌啶离子侧链型聚芳基亚烷阴离子交换膜的制备
作者： 王家理1， 张旭强1， 曹家赫2， 李贤明1， 黄圣梅1， 赵春辉1*， 张秋根2
单位： 1. 南昌航空大学 材料科学与工程学院， 南昌 330063； 2. 厦门大学  化学化工学院， 厦门 361005
关键词： 阴离子交换膜； 电解水制氢； 微相分离结构； 耐碱稳定性
DOI号： 10.16159/j.cnki.issn1007-8924.2026.03.002
分类号：  TQ116.2+1； O632.7
出版年,卷(期):页码： 2026, 46(3):13-0

摘要：

开发兼具高离子电导率、优异化学稳定性和良好尺寸稳定性的阴离子交换膜（AEM）是电解水制氢技术的关键方向。通过超酸催化反应，制备了一系列以聚（芴基-三联苯-亚烷）为主链和以双哌啶离子为阳离子的侧链型阴离子交换膜。研究结果表明，该系列膜均呈现出微相分离结构，并表现出较高的离子电导率以及良好的尺寸稳定性和化学稳定性。其中，PFTT-MePi-0.5膜在80 ℃下，Cl-和OH-电导率分别达45.14 mS/cm和120.07 mS/cm，同时其含水率为18.79%，溶胀度低于5%；在70 ℃下，1 mol/L NaOH溶液中浸泡1 200 h后，其电导率保持率在93%以上。此外，基于该膜组装的AEMWE单电池在80 ℃、2.0 V、1 mol/L KOH条件下，实现2.1 A/cm2电流密度；在1 A/cm2恒流工况下连续运行1 200 h后，电压衰减率仅为117 μV/h，且膜结构保持完整，未出现破损。

The development of anion exchange membranes (AEMs) with high ionic conductivity, excellent alkaline stability, and good dimensional stability is a crucial direction in hydrogen production via water electrolysis. Through superacid-catalyzed polymerization, a series of side chain type anion exchange membranes were synthesized with poly(fluorenyl arylene alkylene) as the main chain and bis-pyridinium as the cation. All the AEMs exhibited a microphase-separated structure, high ionic conductivity, as well as good dimensional and alkaline stability. The PFTT-MePi-0.5 AEM exhibited Cl- and OH- conductivities of 45.14 mS/cm and 120.07 mS/cm at 80 ℃, with a water uptake of 18.79% and a swelling ratio below 5%. After immersion in 1 mol/L NaOH solution at 70 ℃ for 1 200 hours, the OH- conductivity retention exceeded 93%. Moreover, an AEMWE single cell assembled with this membrane achieved a current density of 2.1 A/cm2 at 80 ℃, 2.0 V, and 1 mol/L KOH. Under a constant current density of 1 A/cm2, the cell operated continuously for 1 200 hours with a voltage decay rate of only 117 μV/h, maintaining membrane integrity without damage. 

基金项目：

国家自然科学基金地区项目（52263018）； 江西省自然科学基金优秀青年项目（20242BAB22015）

作者简介：
第一作者简介： 王家理（2002-），男，江西上饶人，硕士研究生，主要从事阴离子交换膜的研究.*通讯作者，E-mail：zhao.chunhui@nchu.edu.cn

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