在高性能离子交换膜的现场交叉连接的二甲功能化聚 ((双基烯))
Jiyoon Jung1,2,3, Young Sang Park1,2,3, Mo Beom Koo1
1Materials Architecturing Research Center, Korea Institute of Science and Technology, Seong Buk Gu, Hwarangno 14 gil-5, Seoul, 02792, Republic of Korea.
Small (Weinheim an der Bergstrasse, Germany)
|December 17, 2025
概括
新的交联离子交换膜 (AEMs) 克服了离子交换膜水电解剂 (AEMWEs) 的导电稳定性权衡. 这些膜具有高离子导电性和机械完整性,使得AEMWE的性能高效且持久.
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
- 聚合物化学 聚合物化学
背景情况:
- 高离子交换能力 (IEC) 的离子交换膜 (AEM) 面临着离子导电性和机械完整性之间的权衡.
- 这一挑战阻碍了离子交换膜水电解技术 (AEMWE) 的实际应用.
研究的目的:
- 开发具有精确可调 IEC 的新型交联 AEM (BP-cross-PDAA).
- 解决AEMs中的导电性-机械完整性权衡,以提高AEMWE性能.
主要方法:
- 自由基循环聚合二甲功能化聚 ((双基烯)) 的自由基循环聚合.
- 调整IEC从2.32到3.39 meq g-1通过调整共纳米含量.
- 用于AEMWE性能评估的膜电极组件 (MEAs) 的制造和测试.
主要成果:
- BP-cross-PDAA膜表现出高的氧导电性 (在80°C时高达152.4mS cm−1) 和优异的性稳定性 (在350小时内保留98.7%).
- 优化的MEA-3.39实现了12.39 A cm-2的峰值电流密度在2.0V与非白金组金属阳极.
- 异常耐用性被证明,电压降解率为1.2μVh-1在1000小时内,在1Acm-2.2时,在1000小时内.
结论:
- 开发的交叉连接的AEM成功地克服了离子导电性和机械完整性之间的内在权衡.
- 高性能的BP-cross-PDAA膜对高效和耐用的AEMWE应用具有前景.
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