The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.
Anion-Exchange Membrane Water Electrolyzers
Open accessAbstract
This Review provides an overview of the emerging concepts of catalysts, membranes, and membrane electrode assemblies (MEAs) for water electrolyzers with anion-exchange membranes (AEMs), also known as zero-gap alkaline water electrolyzers. Much of the recent progress is due to improvements in materials chemistry, MEA designs, and optimized operation conditions. Research on anion-exchange polymers (AEPs) has focused on the cationic head/backbone/side-chain structures and key properties such as ionic conductivity and alkaline stability. Several approaches, such as cross-linking, microphase, and organic/inorganic composites, have been proposed to improve the anion-exchange performance and the chemical and mechanical stability of AEMs. Numerous AEMs now exceed values of 0.1 S/cm (at 60–80 °C), although the stability specifically at temperatures exceeding 60 °C needs further enhancement. The oxygen evolution reaction (OER) is still a limiting factor. An analysis of thin-layer OER data suggests that NiFe-type catalysts have the highest activity. There is debate on the active-site mechanism of the NiFe catalysts, and their long-term stability needs to be understood. Addition of Co to NiFe increases the conductivity of these catalysts. The same analysis for the hydrogen evolution reaction (HER) shows carbon-supported Pt to be dominating, although PtNi alloys and clusters of Ni(OH)2 on Pt show competitive activities. Recent advances in forming and embedding well-dispersed Ru nanoparticles on functionalized high-surface-area carbon supports show promising HER activities. However, the stability of these catalysts under actual AEMWE operating conditions needs to be proven. The field is advancing rapidly but could benefit through the adaptation of new in situ techniques, standardized evaluation protocols for AEMWE conditions, and innovative catalyst-structure designs. Nevertheless, single AEM water electrolyzer cells have been operated for several thousand hours at temperatures and current densities as high as 60 °C and 1 A/cm2, respectively.
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Cites
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Cited by
State-of-the-art hydrogen generation techniques and storage methods: A critical review
Tang, D., Tan, G.-L., Li, G.-W., Liang, J.-G., Ahmad, S. M., Bahadur, A., Humayun, M., Ullah, H., Khan, A., & Bououdina, M. (2023) · Journal of Energy Storage · doi:10.1016/j.est.2023.107196 · Cited by 297
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Development of Anion Exchange Membrane Water Electrolysis and the Associated Challenges: A Review
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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
- Du, N., Roy, C., Peach, R., Turnbull, M., Thiele, S., & Bock, C.
- Venue
- Chemical Reviews
- Publisher
- American Chemical Society (ACS)
- Published
- 2022-04-20
- Volume
- 122
- Issue
- 13
- Pages
- 11830-11895
- ISSN
- 0009-2665 (ISSN-L)
- 1520-6890
- OpenAlex
- W4224303757
- Cited by
- 1,075
- References
- 29
- FWCI
- 10.33
- Type
- journal article
- Language
- en
- Open access
- hybrid
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