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化聚 ((p-triphenyl piperidine) 离子交换膜具有强大的尺寸稳定性,用于燃料电池

Ze Yu¹, Wei Ting Gao¹, Ying Jie Liu¹

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, PR China.

Journal of colloid and interface science

|August 7, 2023

概括

化离子交换膜 (AEM) 提高了更经济的燃料电池的导电性和尺寸稳定性. 在可再生能源应用中,PTF6-QAPTP膜表现出卓越的性能和耐用性.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
可再生能源可再生能源是可再生能源.

背景情况:

阳离子交换膜燃料电池 (AEMFC) 提供了一个比质子交换膜燃料电池 (PEMFC) 更经济的替代方案.
开发高性能AEM对于推进AEMFC技术至关重要,但在平衡尺寸稳定性和离子导电性方面面临挑战.
没有以太的芳香聚合物对AEM有希望,但需要优化用于实际应用.

研究的目的:

通过将化基组纳入p-甲皮皮利丁骨干中,提高离子交换膜 (AEM) 的性能.
研究不同程度的化对AEM尺寸稳定性和氧化物 (OH-) 导电性的影响.
评估开发的化AEMs的性耐用性和燃料电池性能.

主要方法:

化p-甲皮皮利丁聚合物的合成,含有不同的甲含量 (x = 0,3,6).
离子交换膜 (AEM) 的特性,包括氧化物导电性,膨胀率和尺寸稳定性.
通过浸泡在NaOH溶液中,评估性耐用性,并监测导电性和阴离子保留.
使用开发的膜来确定功率密度和长期稳定性的单细胞AEMFC的制造和测试.

主要成果:

化AEMs由于增强的水友性通道形成而表现出更好的OH导电性,同时保持尺寸稳定性.
具有最高化度的PTF6-QAPTP膜,在80°C时达到142.7mS cm-1的OH导电率和4.55%的低膨胀比.
观察到优异的耐久性,具有93.45%的OH-导电性和92.6%的四级氨基离子保留在2M NaOH在80°C下1200小时后.
基于 PTF6-QAPTP 的单电池显示了 849 mW cm-2 的峰值功率密度,并在 80 小时的稳定性测试后保持了 88% 的电压保留.

结论:

将基纳入基于p-甲 piperidine的AEM有效平衡尺寸稳定性和离子导电性.
PTF6-QAPTP膜显示出对高性能和持久的离子交换膜燃料电池的重大承诺.
这些发现有助于开发利用先进的膜材料的经济高效的可再生能源技术.

关键词:

阳离子交换膜的阳离子交换膜.维度稳定性维度稳定性化基是指化基的组成部分.水友性通道是水友性通道.贸易权衡效应的产生.

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