TY - JOUR
T1 - Assessing the Oxidative Stability of Anion Exchange Membranes in Oxygen Saturated Aqueous Alkaline Solutions
AU - Arges, Christopher G.
AU - Ramani, Vijay
AU - Wang, Zhongyang
AU - Ouimet, Ryan J.
N1 - Funding Information:
The author VR would like to acknowledge with gratitude the Office of Naval Research (ONR grant no. N00014-16-1-2833) for funding this work. The author VR also acknowledges with gratitude generous support from the Roma B. and Raymond H. Wittcoff Distinguished University Professorship at Washington University in St. Louis. The author RO would like to acknowledge the U.S. Department of Energy and the funding support from project DOE-DE-EE0008092, Benchmarking Advanced Water Splitting Technologies: Best Practices in Materials Characterization.
Publisher Copyright:
Copyright © 2022 Arges, Ramani, Wang and Ouimet.
PY - 2022/3/28
Y1 - 2022/3/28
N2 - While anion exchange membrane water electrolyzers show promise as a source of green hydrogen using low-temperatures and non-platinum group metal catalysts, many concerns must be addressed. A primary challenge for the development of high-performance anion exchange membrane water electrolyzers is the fabrication of a stable membrane that will be able to survive long-term stability test while maintaining high anion conductivity, which is a necessity for a durable water electrolyzer. This method will present a standardized protocol that can be used by researchers to assess the quality of their AEM materials and be able to provide insight into how materials may be degrading and how to improve the quality of AEMs. Using Mohr or Volhard titration to measure ion-exchange capacity, EIS to determine the ionic conductivity, NMR and FTIR to understand the extent of membrane degradation over time, and mechanical analyzers to determine the strength of their AEMs, this standardized protocol will guide researchers to determining and improving upon the long-term durability and performance of their AEM materials.
AB - While anion exchange membrane water electrolyzers show promise as a source of green hydrogen using low-temperatures and non-platinum group metal catalysts, many concerns must be addressed. A primary challenge for the development of high-performance anion exchange membrane water electrolyzers is the fabrication of a stable membrane that will be able to survive long-term stability test while maintaining high anion conductivity, which is a necessity for a durable water electrolyzer. This method will present a standardized protocol that can be used by researchers to assess the quality of their AEM materials and be able to provide insight into how materials may be degrading and how to improve the quality of AEMs. Using Mohr or Volhard titration to measure ion-exchange capacity, EIS to determine the ionic conductivity, NMR and FTIR to understand the extent of membrane degradation over time, and mechanical analyzers to determine the strength of their AEMs, this standardized protocol will guide researchers to determining and improving upon the long-term durability and performance of their AEM materials.
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U2 - 10.3389/fenrg.2022.871851
DO - 10.3389/fenrg.2022.871851
M3 - Article
AN - SCOPUS:85128392584
SN - 2296-598X
VL - 10
JO - Frontiers in Energy Research
JF - Frontiers in Energy Research
M1 - 871851
ER -