Self-crosslinked alkaline electrolyte membranes based on聽quaternary ammonium poly (ether sulfone) for high-performance alkaline fuel cells

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• 作者：Hongcheng Sun ; Gang Zhang ; Zhongguo Liu ; Na Zhang ; Liyuan Zhang ; Wenjia Ma ; Chengji Zhao ; Duo Qi ; Guibin Li ; Hui Na ; ^{huina@jlu.edu.cn}
• 关键词：Poly (ether sulfone) ; Quaternary ammonium ; Self-crosslinking technology ; Hydroxide ion conductivity
• 刊名：International Journal of Hydrogen Energy
• 出版年：2012
• 期刊代码：42_03603199
• 类别：ch
• 出版时间：June, 2012
• 卷：37
• 期：12
• 页码：9873-9881
• 文件大小：948 K

摘要

Novel self-crosslinked alkaline electrolyte membranes with high hydroxide ion conductivity, excellent dimensional stability and extraordinary solvent resistance stability are synthesized successfully without using any catalyst or separate crosslinker. Monitored by聽¹H NMR analysis, the synthetic process of trimethyl poly (ether sulfone)-methylene quaternary ammonium hydroxide (TPQAOH) is found to be simple and efficient. The chemical and thermal stability of the synthetic SCL-TPQAOH-x membranes are better than other anion exchange membranes. At the same time, the hydroxide ion conductivity of SCL-TPQAOH-0.67 membrane reaches 33聽mS聽cm^鈭? with an IEC value of 1.07聽mmol聽g^鈭? at 80聽掳C, which complies with the requirements of alkaline fuel cells. This investigation also proves that self-crosslinking technology is a very simple and effective approach in improving the performance of alkaline electrolyte membranes.