通过界面膜-阴离子交联提高阴离子交换膜电解水电池的耐用性

IF 1.7 4区 化学
Yerim Lee, Wooseok Lee, Tae-Hyun Kim
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引用次数: 0

摘要

提高基于阴离子交换膜(AEM)的电解水(AEMWE)电池的性能和耐用性的研究主要是为了促进商业化和提高 AEM 的化学稳定性,其中阴离子交换离子膜(AEIs)发挥着越来越重要的作用。本研究旨在通过在膜电极组件(MEA)中使用烯丙基和季铵官能化聚(苯基氧化物)(PPO)(烯丙基-m-PPO)作为 AEM 和 AEI,通过 AEM-离子交换体交联减少离子交换体膨胀并增强 AEM 与催化剂的粘附性。双(芳基叠氮化物)作为交联剂加入到离子膜溶液中生成 MEA,然后加热 MEA,使烯丙基叠氮化物在膜-离子膜界面上交联。剥离测试表明,交联的 x-烯丙基-0.05-PPO(烯丙基含量为离子导电头基总含量的 5 摩尔%)在两个电极上的附着力都有所提高。此外,与 TA-PPO 相比,x-烯丙基-0.05-PPO 因交联而导致的电压升高较小,这表明其耐用性显著提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Enhancing the durability of anion exchange membrane water electrolysis cells via interfacial membrane–ionomer crosslinking

Enhancing the durability of anion exchange membrane water electrolysis cells via interfacial membrane–ionomer crosslinking

Research into enhancing the performance and durability of anion exchange membrane (AEM)-based water electrolysis (AEMWE) cells has primarily aimed to facilitate commercialization efforts and improve the chemical stability of AEMs, with anion exchange ionomers (AEIs) playing an increasingly important role. This study aimed to reduce ionomer swelling and enhance AEM–catalyst adhesion via AEM–ionomer crosslinking within a membrane electrode assembly (MEA), using allyl- and quaternary ammonium-functionalized poly(phenylene oxide) (PPO), allyl-m-PPO, as both the AEM and AEI. Bis(aryl azide) was added as a crosslinker to an ionomer solution to generate the MEA, which was heated to induce allyl–azide crosslinks at the membrane–ionomer interface. Peel test indicated an increased adhesion at both electrodes for the crosslinked x-allyl-0.05-PPO (5 mol% allyl content relative to the total ion-conducting head group content). Further, x-allyl-0.05-PPO exhibited a smaller voltage increase due to crosslinking compared to TA-PPO, signifying a notable improvement in durability.

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来源期刊
Bulletin of the Korean Chemical Society
Bulletin of the Korean Chemical Society Chemistry-General Chemistry
自引率
23.50%
发文量
182
期刊介绍: The Bulletin of the Korean Chemical Society is an official research journal of the Korean Chemical Society. It was founded in 1980 and reaches out to the chemical community worldwide. It is strictly peer-reviewed and welcomes Accounts, Communications, Articles, and Notes written in English. The scope of the journal covers all major areas of chemistry: analytical chemistry, electrochemistry, industrial chemistry, inorganic chemistry, life-science chemistry, macromolecular chemistry, organic synthesis, non-synthetic organic chemistry, physical chemistry, and materials chemistry.
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