Jin Zhiyu, Zou Xiuyang, Xu Guodong, Sun Zhe, Yan Feng
Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Suzhou Key Laboratory of Soft Material and New Energy, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
Molecules. 2023 Jul 17;28(14):5470. doi: 10.3390/molecules28145470.
In this work, a thiol-ene coupling reaction was employed to prepare the semi-interpenetrating polymer network AEMs. The obtained QP-1/2 membrane exhibits high hydroxide conductivity (162.5 mS cm at 80 °C) with a relatively lower swelling ratio, demonstrating its mechanical strength of 42 MPa. This membrane is noteworthy for its improved alkaline stability, as the semi-interpenetrating network effectively limits the attack of hydroxide. Even after being treated in 2 M NaOH at 80 °C for 600 h, 82.5% of the hydroxide conductivity is maintained. The H/O fuel cell with QP-1/2 membrane displays a peak power density of 521 mW cm. Alkaline water electrolyzers based on QP-1/2 membrane demonstrated a current density of 1460 mA cm at a cell voltage of 2.00 V using NiCoFe catalysts in the anode. All the results demonstrate that a semi-interpenetrating structure is a promising way to enhance the mechanical property, ionic conductivity, and alkaline stability of AEMs for the application of alkaline fuel cells and water electrolyzers.
在这项工作中，采用硫醇-烯偶联反应制备了半互穿聚合物网络阴离子交换膜。所制备的QP-1/2膜在80℃时表现出高的氢氧根离子电导率（162.5 mS/cm）以及相对较低的溶胀率，其机械强度为42 MPa。该膜因其改善的碱性稳定性而值得关注，因为半互穿网络有效地限制了氢氧根的侵蚀。即使在80℃的2 M NaOH中处理600 h后，仍能保持82.5%的氢氧根离子电导率。具有QP-1/2膜的氢氧燃料电池的峰值功率密度为521 mW/cm²。基于QP-1/2膜的碱性水电解槽在阳极使用NiCoFe催化剂、电池电压为2.00 V时，电流密度为1460 mA/cm²。所有结果表明，半互穿结构是增强阴离子交换膜的机械性能、离子电导率和碱性稳定性以应用于碱性燃料电池和水电解槽的一种有前景的方法。
