Hu Chuan, Wang Yong, Lee Young Moo
Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
School of Energy and Environment, Southeast University, No. 2, Southeast University Road, Jiangning District, Nanjing, Jiangsu Province, China.
Angew Chem Int Ed Engl. 2025 Jan 15;64(3):e202418324. doi: 10.1002/anie.202418324. Epub 2024 Nov 19.
Anion exchange membrane (AEM) water electrolyzers (AEMWEs) have attracted great interest for their potential as sustainable, environmentally friendly, low-cost sources of renewable energy. Alkaline polyelectrolytes play a crucial role in AEMWEs, determining their performance and longevity. Because heteroatom-containing polymers have been shown to have poor durability in alkaline conditions, this review focuses on ether-free alkaline polyelectrolytes, which are more chemically stable. The merits, weaknesses, and challenges in preparing ether-free AEMs are summarized and highlighted. The evaluation of synthesis methods for polymers, modification strategies, and cationic stability will provide insights valuable for the structural design of future alkaline polyelectrolytes. Moreover, the in situ degradation mechanisms of AEMs and ionomers during AEMWE operation are revealed. This review provides insights into the design of alkaline polyelectrolytes for AEMWEs to accelerate their widespread commercialization.
阴离子交换膜（AEM）水电解槽（AEMWEs）因其作为可持续、环境友好、低成本可再生能源来源的潜力而备受关注。碱性聚电解质在AEMWEs中起着关键作用，决定了它们的性能和寿命。由于含杂原子的聚合物在碱性条件下耐久性较差，本综述聚焦于化学稳定性更高的无醚碱性聚电解质。总结并强调了制备无醚AEMs的优点、缺点和挑战。对聚合物合成方法、改性策略和阳离子稳定性的评估将为未来碱性聚电解质的结构设计提供有价值的见解。此外，还揭示了AEMWE运行过程中AEMs和离聚物的原位降解机制。本综述为AEMWEs碱性聚电解质的设计提供了见解，以加速其广泛商业化。
