Self-crosslinked alkaline electrolyte membranes based on quaternary ammonium poly (ether sulfone) for high-performance alkaline fuel cells
Self-crosslinked alkaline electrolyte membranes based on quaternary ammonium poly (ether sulfone) for high-performance alkaline fuel cells
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DOI：
10.1016/j.ijhydene.2012.03.115
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发表时间：
2012-06
影响因子：
7.2
通讯作者：
Hongcheng Sun;Gang Zhang;Zhongguo Liu;N. Zhang;Liyuan Zhang;Wenjia Ma;Chengji Zhao;Duo Qi;
中科院分区：
文献类型：
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作者：
Hongcheng Sun;Gang Zhang;Zhongguo Liu;N. Zhang;Liyuan Zhang;Wenjia Ma;Chengji Zhao;Duo Qi;
在不使用任何催化剂和单独交联剂的情况下，成功地合成了具有高氢氧离子电导率、优异的尺寸稳定性和优异的耐溶剂稳定性的新型自交联碱电解质膜。通过核磁共振氢谱分析，发现三甲基聚醚砜-亚甲基季铵氢氧化物(TPQAOH)的合成工艺简单、高效。合成的SCL-TPQAOH-x膜的化学稳定性和热稳定性均优于其他阴离子交换膜。同时，SCL-TPQAOH0.67膜的氢离子电导率在80℃时达到33mmol.cm−1，IEC值为1.07mmolg−1，符合碱性燃料电池的要求。本研究还证明了自交联技术是提高碱性电解质膜性能的一种非常简单有效的方法。
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 by1H 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 mS cm−1with an IEC value of 1.07 mmol g−1at 80 °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.