含的多基离子交换膜,具有高氧导电性和物理化学稳定性,用于水电解
Haeryang Lim1, Gyeong Ho Han2, Dae Hwan Lee1
1Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea.
Small (Weinheim an der Bergstrasse, Germany)
|March 18, 2024
概括
被纳入离子交换膜 (AEM) 提高了氧化物导电性和AEM水电解 (AEMWE) 的尺寸稳定性. 这一突破使金组无金属阳极具有高性能.
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:
- AEM水电解 (AEMWE) 的商业化需要改进的AEM,具有高氧导电性,尺寸稳定性和性稳定性.
- 目前的AEM面临着平衡这些属性的挑战,以实现高效和持久的运行.
研究的目的:
- 通过将加入聚合物骨干中来开发具有增强性能的新型AEM.
- 调查加入对AEM性能和稳定性的影响.
- 评估这些AEM在没有PGM的AEMWE系统中的潜力.
主要方法:
- 合成了一种新的AEM (PFPFTP-QA),其中原子集成到核心骨干结构中.
- 在恶劣条件下,特征是AEM的氧导电性,维度稳定性和性稳定性.
- 组装并测试使用PFPFTP-QA膜和无PGM的NiFe阳极的AEMWE电池.
主要成果:
- 该PFPFTP-QA AEM表现出高的氧导电性 (>159 mS cm-1在80°C) 和有利的尺寸稳定性 (>25%在80°C).
- 证明了出色的性稳定性,在2M KOH 80°C下保持完整性1000小时.
- 使用无PGM的NiFe阳极的AEMWE电池实现了高电流密度 (6.86A cm-2在80°C的1.9V) 和100多小时的稳定运行.
结论:
- 在AEM骨干中加入是一种有效的策略,可以提高离子导电性和机械性能.
- 开发的PFPFTP-QA AEM显示出对高性能,具有成本效益的AEMWE的重大承诺.
- 这项工作为AEMWE技术中的无PGM电极铺平了道路.
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