电位滴定法
滴定法
膜
离子
离子交换
化学
卤化物
协议(科学)
材料科学
分析化学(期刊)
无机化学
色谱法
有机化学
病理
医学
生物化学
替代医学
作者
Lan Wang,Santiago Rojas‐Carbonell,Keda Hu,Brian P. Setzler,Andrew R Motz,Matthew Ueckermann,Yushan Yan
标识
DOI:10.3389/fenrg.2022.887893
摘要
Ion-exchange capacity (IEC) is the measure of a material’s capability to displace ions formerly incorporated within its structure. IEC is a key feature of anion-exchange membranes (AEM), as it determines the AEM’s ability to conduct the ions required to sustain the electrochemical reactions where they are utilized. As an intrinsic property, measuring the IEC accurately is essential to study AEMs and understand their performance within devices. In this method article, a facile and accurate standard operating procedure (SOP) to measure the IEC of AEMs is proposed. When compared to conventional acid-base back-titration or Mohr titration, the proposed method combines the fast reaction between silver and halide ions and the accuracy of the potentiometric titration, providing a convenient and precise protocol for researchers in the field.
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