调整侧链之间的极分,以提高离子交换膜的性能
Wei Ting Gao1, Xue Lang Gao2, Qiu Gen Zhang1
1Department of Chemical & Biochemical Engineering, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
Journal of colloid and interface science
|March 23, 2024
概括
带有优化侧链的离子交换膜 (AEM) 显示了燃料电池和水电解的增强离子导电性和稳定性. 这种侧链工程是开发先进的AEM的一个有希望的策略.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 聚合物化学 聚合物化学
背景情况:
- 阳离子交换膜 (AEM) 对性燃料电池和水电解至关重要,但目前导电性和稳定性的限制阻碍了商业化.
- 侧链修改是提高AEM性能的一个关键策略,重点是提高离子传输和耐用性.
研究的目的:
- 调查极端侧链歧视对AEM性能的影响.
- 通过战略侧链工程开发高导电性和稳定的AEM.
主要方法:
- 合成多芳香的AEMs与化阴离子和无阴离子基侧链接接种,具有不同的末端组.
- 膜性质的表征,包括含水量,离子导电性和性稳定性.
- 单性燃料电池和水电解装置的性能评估.
主要成果:
- 具有超疏水性化酸盐侧链和水友性基侧链的AEMs表现出增强的吸水和离子导电性.
- 在80°C时,QBNTP-QFM膜实现了170.6mS cm-1的导电性,并在5M热NaOH中保持了2100小时的稳定性.
- QBNTP-QFM在燃料电池 (1.62 W cm−2) 和水电解 (3.0 A cm−2 在 1.8 V) 应用中表现出色,具有强大的耐用性.
结论:
- 侧链工程,特别是水友和疏水组之间的不可混合性,有效地促进微相分离和离子运输通路.
- 像QBNTP-QFM这样的优化AEM显示了推进电化学能量转换技术的巨大潜力.
- 这种方法为开发下一代AEM提供了一个有前途的途径.
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