The DOI matches its Crossref record; 57 of the 57 references it cites were found in a registry or an index.
Acidic or Alkaline? Towards a New Perspective on the Efficiency of Water Electrolysis
Open accessAbstract
Water electrolysis is a promising technology for enabling the storage of surplus electricity produced by intermittent renewable power sources in the form of hydrogen. At the core of this technology is the electrolyte, and whether this is acidic or alkaline affects the reaction mechanisms, gas purities and is of significant importance for the stability and activity of the electrocatalysts. This article presents a simple but precise physical model to describe the voltage-current characteristic, heat balance, gas crossover and cell efficiency of water electrolyzers. State-of-the-art water electrolysis cells with acidic and alkaline electrolyte are experimentally characterized in order to parameterize the model. A rigorous comparison shows that alkaline water electrolyzers with Ni-based catalysts but thinner separators than those typically used is expected be more efficient than acidic water electrolysis with Ir and Pt based catalysts. This performance difference was attributed mainly to a similar conductivity but approximately 38-fold higher diffusivities of hydrogen and oxygen in the acidic polymer electrolyte membrane (Nafion) than those in the alkaline separator (Zirfon filled with a 30 wt} KOH solution). With reference to the detailed analysis of the cell characteristics, perspectives for the improvement of the efficiency of water electrolyzers are discussed.
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Cited by
Xiong, T., Huang, B., Wei, J., Yao, X., Xiao, R., Zhu, Z., Yang, F., Huang, Y., Yang, H., & Balogun, M.-S. (. T. (2022) · Journal of Energy Chemistry · doi:10.1016/j.jechem.2021.11.025 · Cited by 193
Bioinspired and Bioderived Aqueous Electrocatalysis
Barrio, J., Pedersen, A., Favero, S., Luo, H., Wang, M., Sarma, S. C., Feng, J., Ngoc, L. T. T., Kellner, S., Li, A. Y., et al. (2023) · Chemical Reviews · doi:10.1021/acs.chemrev.2c00429 · Cited by 80
Khan, I., Baig, N., Bake, A., Haroon, M., Ashraf, M., Al-Saadi, A., Tahir, M. N., & Wooh, S. (2023) · Carbon · doi:10.1016/j.carbon.2023.118292 · Cited by 58
Aerogel-derived nickel-iron oxide catalysts for oxygen evolution reaction in alkaline media
Osmieri, L., Yu, H., Hermann, R. P., Kreider, M. E., Meyer, H. M., Kropf, A. J., Park, J. H., Alia, S. M., Cullen, D. A., Myers, D. J., et al. (2024) · Applied Catalysis B: Environment and Energy · doi:10.1016/j.apcatb.2024.123843 · Cited by 34
Yao, D., Liu, C., Zhang, Y., Wang, S., Nie, Y., Qiao, M., & Zhu, D. (2025) · Materials Today Catalysis · doi:10.1016/j.mtcata.2025.100089 · Cited by 21
Metadata
- Authors
- Schalenbach, M., Tjarks, G., Carmo, M., Lueke, W., Mueller, M., & Stolten, D.
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 2016
- Volume
- 163
- Issue
- 11
- Pages
- F3197-F3208
- ISSN
- 0013-4651 (ISSN-L)
- 1945-7111
- OpenAlex
- W2511041404
- Cited by
- 359
- References
- 57
- FWCI
- 9.45
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Schalenbach, M., Tjarks, G., Carmo, M., Lueke, W., Mueller, M., & Stolten, D. (2016). Acidic or Alkaline? Towards a New Perspective on the Efficiency of Water Electrolysis. Journal of The Electrochemical Society. https://doi.org/10.1149/2.0271611jes
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