| Preparation of piperidine cross-linked polyarylene anion exchange membrane |
| Authors： Zhao Yu Zhu, Qiu Gen Zhang, Ai Mei Zhu, Qing Lin Liu |
| Units： The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China |
| KeyWords： Full-carbon backbone; Piperidine crosslinked type; Anion exchange membrane; Fuel cells |
| ClassificationCode：O632.7 |
| year,volume(issue):pagination： 2022,42(6):22-30 |
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Abstract： |
| A series of piperidine or conventional quaternary ammonium cationic crosslinked ether free fluorinated poly(biphenyl piperidinium) AEMs were prepared by polyhydroxyalkylation and Menshutkin reaction. Under the combined effect of crosslinking and fluorination, the QBPBP/TFAP-X and QAPBP/TFAP-30% AEM exhibited low swelling ratios (4.3%-8.3%, 80 °C). QBPBP/TFAP-45% (1.52 meq g−1) with the most obvious microphase separation achieved the highest conductivity of 124.0 mS cm−1 at 80 °C. In an alkaline resistance test, series of piperidine crosslinked QBPBP/TFAP-X membranes showed better alkaline stability. Treated in a 2 M NaOH solution at 80 °C for 1000 h, QBPBP/TFAP-45% showed conductivity retention of 94.07%, indicating that piperidine cation has better alkaline tolerance than traditional quaternary ammonium. At a current density of 521.3 mA cm−2, the single cell assembled by the QBPBP/TFAP-45% membrane achieved a maximum power density of 266.8 mW cm−2. |
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Funds： |
| 国家自然基金面上项目(21878252 & 22078272) |
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AuthorIntro： |
| 苟维维(1996-)，女，四川省巴中市人，在读硕士研究生，主要从事功能膜材料的制备 |
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Reference： |
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