Hydroxide ions in anion exchange membranes (AEMs) are quickly exchanged for larger and less mobile anions (CO₃²⁻ and HCO₃⁻) when the membrane is exposed to ambient air. Therefore, reported conductivity values of AEMs in hydroxide form are difficult to reproduce, and existing conductivity measurement techniques are not always reliable. Up to now, comparison of reported data for the hydroxide conductivity of different membranes has not been possible because tests have been performed not just with different anions, but also under different conditions and using different methods. In this work we present a practical and reproducible ex situ method for measuring the true value of the hydroxide conductivity of AEMs.

在阴离子交换膜（的AEM）氢氧根离子被快速较大和更少的移动交换的阴离子（CO 3 ^2-和HCO 3 ^- ），当膜被暴露于环境空气。因此，难以再现所报告的氢氧化物形式的AEM的电导率值，并且现有的电导率测量技术并不总是可靠的。到目前为止，尚未对报道的不同膜的氢氧化物电导率数据进行比较，因为不仅对不同的阴离子，而且还在不同的条件和使用不同的方法进行了测试。在这项工作中，我们提出了一种实用且可重现的非原位方法，用于测量AEM的氢氧化物电导率的真实值。