High molecular weight polycarbazole-based anion exchange membrane with excellent cell performance and durability for anion exchange membrane water electrolyzer
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초록
내용
The electrochemical energy conversion devices using anion exchange membranes (AEMs), which could efficiently convert electrical energy to chemical energy, have been considered as attractive technology with the potential advantages of utilizing low-cost catalysts based on non-precious metals and less expensive metal hardware. Typically, AEMs and ionomers are regarded as core components to play a major role in those applications, meanwhile, there are still no reliable AEMs to be utilized under harsh operating conditions. Herein, we show high molecular weight polycarbazole-based anion exchange membrane materials, HQPC-TMA, with outstanding chemical stability as well as excellent electrochemical and morphological properties. Moreover, AEMWE single cell with HQPC-TMA membrane showed state-of-the-art performances of water electrolysis cell as high as over 14 A/cm2 @ 2V.