高性基复合物离子交换膜用于水电解和燃料电池

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Wenli Ma¹, Lin Tian¹, Qingqing Zhu¹

¹State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.

ACS applied materials & interfaces

|February 27, 2024

概括

这项研究引入了一种新的复合膜,用于高性能离子交换膜 (AEM). 开发出来的膜显示出极好的稳定性和导电性,用于水电解和燃料电池.

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
聚合物科学聚合物科学

背景情况:

阳离子交换膜 (AEM) 对燃料电池和水电解仪等电化学设备至关重要.
开发具有高性能,稳定性和成本效益的AEM仍然是一个重大挑战.
现有的 AEM 往往有不良的机械性能,有限的离子导电性和性不稳定性.

研究的目的:

使用无机有机复合材料 (IOC) 策略制造先进的复合膜 (CM),用于增强水电解和燃料电池应用.
调查水友极性纳米齐尔科尼亚含量对复合膜的性能和性能的影响.
为了改善电化学设备膜电极组件 (MEAs) 内的接口兼容性.

主要方法:

通过IOC策略制造复合膜 (CM) PBP-SH-Zrx,其中包括涂上不同量纳米基的点击交叉连接膜.
膜性质的表征,包括离子导电性,维度稳定性和性稳定性.
在水电解和H2/O2燃料电池中的性能评估,包括电荷转移阻力,电流密度,耐用性和功率密度测量.

主要成果:

CM PBP-SH-Zr4 显示出高离子导电性 (167.7 mS cm−1,80 °C) 和令人满意的尺寸稳定性 (SR 16.5%,WU 206.4%,80 °C).
证明了优异的性稳定性,在2M NaOH中仅在2200小时后降解16% .
在水电解中,CM PBP-SH-Zr4表现出较低的界面电阻,高电流密度 (2.5 A cm-2 在2.2 V) 和良好的耐用性 (0.361 mV h-1 在360小时后的电压下降).
在H2/O2燃料电池中,达到0.464W cm-2的峰值功率密度.

结论:

拟议的IOC战略有效地提高了AEM的全面性能和界面兼容性.
研发的复合膜显示出在推进水电解和燃料电池技术方面的巨大潜力.
这种方法为开发下一代离子交换膜提供了一个有希望的途径.

关键词:

H2/O2 燃料电池燃料电池的使用情况含有水友的环氧化.这是一个微型的 microgap.有机 - 无机复合膜.水的电解是水的电解.

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