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Separators and Membranes for Advanced Alkaline Water Electrolysis
Open accessAbstract
Traditionally, alkaline water electrolysis (AWE) uses diaphragms to separate anode and cathode and is operated with 5-7 M KOH feed solutions. The ban of asbestos diaphragms led to the development of polymeric diaphragms, which are now the state of the art material. A promising alternative is the ion solvating membrane. Recent developments show that high conductivities can also be obtained in 1 M KOH. A third technology is based on anion exchange membranes (AEM); because these systems use 0-1 M KOH feed solutions to balance the trade-off between conductivity and the AEM's lifetime in alkaline environment, it makes sense to treat them separately as AEM WE. However, the lifetime of AEM increased strongly over the last 10 years, and some electrode-related issues like oxidation of the ionomer binder at the anode can be mitigated by using KOH feed solutions. Therefore, AWE and AEM WE may get more similar in the future, and this review focuses on the developments in polymeric diaphragms, ion solvating membranes, and AEM.
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Anion-exchange membranes in electrochemical energy systems
Varcoe, J. R., Atanassov, P., Dekel, D. R., Herring, A. M., Hickner, M. A., Kohl, P. A., Kucernak, A. R., Mustain, W. E., Nijmeijer, K., Scott, K., et al. (2014) · Energy Environ. Sci. · doi:10.1039/c4ee01303d · Cited by 2,051
GILLIAM, R., GRAYDON, J., KIRK, D., & THORPE, S. (2007) · International Journal of Hydrogen Energy · doi:10.1016/j.ijhydene.2006.10.062 · Cited by 702
Liquid Organic Hydrogen Carrier (LOHC)—Assessment based on chemical and economic properties
Niermann, M., Beckendorff, A., Kaltschmitt, M., & Bonhoff, K. (2019) · International Journal of Hydrogen Energy · doi:10.1016/j.ijhydene.2019.01.199 · Cited by 635
First implementation of alkaline polymer electrolyte water electrolysis working only with pure water
Xiao, L., Zhang, S., Pan, J., Yang, C., He, M., Zhuang, L., & Lu, J. (2012) · Energy & Environmental Science · doi:10.1039/c2ee22146b · Cited by 313
Separator materials for use in alkaline water electrolysers☆
RENAUD, R., & LEROY, R. (1982) · International Journal of Hydrogen Energy · doi:10.1016/0360-3199(82)90142-2 · Cited by 70
Cited by
Introduction to Green Hydrogen
Boettcher, S. W. (2024) · Chemical Reviews · doi:10.1021/acs.chemrev.4c00787 · Cited by 389
Lin, G., Dong, A., Li, Z., Li, W., Cao, X., Zhao, Y., Wang, L., & Sun, L. (2025) · Advanced Materials · doi:10.1002/adma.202507525 · Cited by 93
Wang, H., Jiao, Y., Zhang, G., Ma, W., Fan, W., Liu, X., Zhao, Y., Xie, H., Ma, W., & Zong, X. (2025) · Advanced Functional Materials · doi:10.1002/adfm.202418617 · Cited by 74
Metadata
- Authors
- Henkensmeier, D., Cho, W.-C., Jannasch, P., Stojadinovic, J., Li, Q., Aili, D., & Jensen, J. O.
- Venue
- Chemical Reviews
- Publisher
- American Chemical Society (ACS)
- Published
- 2024-04-26
- Volume
- 124
- Issue
- 10
- Pages
- 6393-6443
- ISSN
- 0009-2665 (ISSN-L)
- 1520-6890
- OpenAlex
- W4395660633
- Cited by
- 360
- References
- 5
- FWCI
- 6.97
- Type
- journal article
- Language
- en
- Open access
- hybrid
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