近日，合肥工业大学丁运生团队研究了用于阴离子交换膜电解的增强聚（亚芳基奎宁环鎓）膜。相关论文于2025年11月17日发表在《中国高分子科学杂志》上。

阴离子交换膜水电解（AEMWE）技术融合了碱性系统的动力学优势、零间隙构型以及与非贵金属催化剂的兼容性，为绿色制氢提供了前景广阔的路径。然而，其实际应用面临三大关键挑战：阴离子交换膜（AEM）的碱性稳定性不足、机械完整性欠缺以及氢渗透现象，这些问题直接影响设备寿命与运行安全。

研究组设计了一种多孔膨胀聚四氟乙烯（e-PTFE）增强的聚（亚芳基奎宁环鎓）膜，该膜在电解过程中既能增强机械韧性、防止应力破裂，又可有效抑制氢渗透。具体而言，这种增强型聚（亚芳基奎宁环鎓）膜（R-PTPQui）表现出56 MPa的抗拉强度与55%的断裂伸长率。在0.1 A·cm⁻²电流密度下，电解槽的氢气渗透量极低，H₂与O₂体积比（HTO）仅为0.44%。基于R-PTPQui的电解槽在使用非贵金属阳极催化剂时，实现了2.0 V电压下4.9 A·cm⁻²的高电流密度和98.6%的法拉第效率。这些突破显著增强了聚（亚芳基奎宁环鎓）基AEM在工业级绿色制氢领域的适用性。

附：英文原文

Title: Reinforced Poly(arylene quinuclidinium) Membranes for Anion Exchange Membrane Water Electrolysis

Author: Tao Wang, Meng-Xiang Ma, Wei-Jie Chen, Yun-Fei Zuo, Hai-Bing Wei, Yun-Sheng Ding

Issue&Volume: 2025-11-17

Abstract: Anion exchange membrane water electrolysis (AEMWE) synergize the kinetic merits of alkaline systems, zero-gap configurations and compatibility with non-noble metal catalysts, offering a promising pathway toward green hydrogen production. Nevertheless, practical exploitation was hindered by critical challenges: inferior alkaline stability, insufficient mechanical integrity, and detrimental hydrogen crossover of anion exchange membranes (AEMs), which compromise both device durability and operational safety. Here, we engineered a porous expanded polytetrafluoroethylene (e-PTFE)-reinforced poly(arylene quinuclidinium) membrane that enhances AEM mechanical robustness, prevents stress-induced rupture, and suppresses hydrogen crossover during electrolyzer operation. Specifically, the reinforced poly(arylene quinuclidinium) membrane (R-PTPQui) exhibited a tensile strength of 56 MPa and an elongation at break of 55%. Moreover, it effectively reduced hydrogen permeation in the electrolyzer, achieving an extremely low H2-to-O2 (HTO) value of 0.44 vol% at 0.1 A·cm2. The R-PTPQui-based electrolyzer achieved a high current density of 4.9 A·cm2 at 2.0 V and a Faradaic efficiency of 98.6% using a non-precious anode catalyst. These advances significantly strength the compatibility of poly(arylene quinuclidinium)-based AEMs for industrial-scale green hydrogen generation.

DOI: 10.1007/s10118-025-3450-3

Source: https://www.cjps.org/en/article/doi/10.1007/s10118-025-3450-3/