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Preparation and performance study of polyarylpiperidine anion exchange membranes containing indole |
| Authors: LIU Zhizhuo, LIU Yingnuo, XUJingmei, WANG Zhe |
| Units: School of Chemical Engineering, Changchun University of Technology, Changchun 130102,China |
| KeyWords: anion exchange membrane; dimensional stability; ion conductivity; fuel cell |
| ClassificationCode:O631.6 |
| year,volume(issue):pagination: 2026, 46(3):22-30 |
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Abstract: |
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In response to the current urgent demand for membrane materials that possess both high chemical stability and efficient hydrogen-oxygen ion conductivity for anion exchange membrane fuel cells, this work aims to prepare a novel type of anion exchange membrane based on a rigid aromatic framework and quaternary ammonium functional sites. Random copolymers with “terphenyl-piperidine” and “terphenyl-indole” structures in the main chain were prepared by condensation polymerization of terphenyl, N-methyl-4-piperidone and indole-2,3-dione in dichloromethane solvent catalyzed by trifluoroacetic acid/trifluoromethanesulfonic acid. Subsequently, the copolymer was quaternized with methyl iodide to introduce quaternary ammonium groups. Finally, functional polymer featuring both a rigid aromatic backbone and ion-conducting sites was obtained. The ion conductivity of the prepared QPTIDP-50 membrane reached 101.98 mS/cm at 80 ℃, with a swelling ratio of 20.17%, demonstrating good dimensional stability. In this study, ether-free anion exchange membranes with good stability and high ionic conductivity were prepared through molecular structure design. The structure-performance relationship of the membrane material under the regulation of rigid monomer content was clarified, providing an important reference for the design and development of high performance membrane materials for anion exchange membrane fuel cells. |
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Funds: |
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国家自然科学基金(52473205,U24A20505); 吉林省自然科学基金(YDZJ202501ZYTS336) |
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AuthorIntro: |
| 第一作者简介: 刘治灼(2000-),男,吉林松原人,硕士,主要研究方向为阴离子交换膜.*通讯作者,徐晶美,E-mail:xujingmei@ccutedu.cn;王哲,E-mail:wangzhe@ ccut.edu.cn |
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Reference: |
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[1]Liu H, Wang H, Cheng L, et al. Beyond conventional chlor-alkali: The anion-exchange membrane breakthrough [J]. AIChE Journal, 2025, 71(11): e70037. |
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