Mechanically robust microporous anion exchange membranes with efficient anion conduction for fuel cells
Mechanically robust microporous anion exchange membranes with efficient anion conduction for fuel cells
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用于燃料电池的机械坚固的微孔阴离子交换膜，具有高效的阴离子传导能力
DOI：
10.1016/j.cej.2021.129311
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发表时间：
2021-08
影响因子：
15.1
通讯作者：
Michael D. Guiver
中科院分区：
文献类型：
--
作者：
Tong Huang;Junfeng Zhang;Yabiao Pei;Xin Liu;Ji;ang Xue;Haifei Jiang;Xiaoyu Qiu;Yan Yin;Hong Wu;Zhongyi Jiang;Michael D. Guiver
Polymers of intrinsic microporosity (PIMs) present an attractive opportunity for developing new types of anion exchange membranes (AEMs) for fuel cell featuring charged subnanometer-sized micropores. But challenges exist to make mechanically robust PIM AEMs due to their high chain rigidity. Imparting more flexibility improves mechanical properties but sacrifices microporosity. Here, a mechanically robust and highly anion conductive PIM AEM (QPIM-1) fabricated by facile animation and quaternization of PIM-1 membrane is reported, and its structure–property relationships are investigated, especially focusing on the microporous structure. High molecular weight alleviates brittleness, as QPIM-1 AEM shows comparable mechanical properties to conventional AEMs, quaternized poly(2,6-dimethyl-1,4-phenylene oxide) (QPPO), at a membrane thickness down to ~35 μm and a high ion exchange capacity (IEC) up to ~2.1 mmol g−1. The micropores situated among the rigid and contorted polymer chains evolve into water/ion conduction channels when the membrane is hydrated. This results in improved morphology over dense polymeric AEMs by less hindered ion pathways. QPIM-1 AEMs exhibit superior ion conduction efficiency, which is 2.6–5.3 times that of dense QPPO AEM at similar ion exchange capacities (IECs). A high hydroxide ion conductivity of 57 mS cm−1at 20 °C is obtained, which is among the highest reported anion conductive PIM-based AEMs. Even though the AEMs are microporous, only slight H2permeation is observed when hydrated and at high open circuit voltage (OCV) of a single fuel cell.
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影响因子：
3.4
作者：
Peipei Zuo;Jiahui Zhou;Zhengjin Yang;Tongwen Xu
通讯作者：
Tongwen Xu
具有优异成膜能力的反应性微孔共聚物用于离子交换膜
影响因子：
9.2
作者：
Peng Liu;Yaqi Zheng;Shumeng Lin;Qian Yang;Yanzhen Hong;Qiugen Zhang;Qinglin Liu
通讯作者：
Qinglin Liu
影响因子：
15
作者：
Li, Nanwen;Leng, Yongjun;Wang, Chao-Yang
通讯作者：
Wang, Chao-Yang
影响因子：
27.8
作者：
Li, Fu Yun;Xiao, Youchang;Chung, Tai-Shung
通讯作者：
Chung, Tai-Shung
由微孔 Troger 基础共聚物制成的多阳离子交联阴离子交换膜
影响因子：
11.9
作者：
Hu, Chuan;Zhang, Qiugen;Liu, Qinglin
通讯作者：
Liu, Qinglin