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A high-performance capillary-fed electrolysis cell promises more cost-competitive renewable hydrogen
Open accessAbstract
Renewable, or green, hydrogen will play a critical role in the decarbonisation of hard-to-abate sectors and will therefore be important in limiting global warming. However, renewable hydrogen is not cost-competitive with fossil fuels, due to the moderate energy efficiency and high capital costs of traditional water electrolysers. Here a unique concept of water electrolysis is introduced, wherein water is supplied to hydrogen- and oxygen-evolving electrodes via capillary-induced transport along a porous inter-electrode separator, leading to inherently bubble-free operation at the electrodes. An alkaline capillary-fed electrolysis cell of this type demonstrates water electrolysis performance exceeding commercial electrolysis cells, with a cell voltage at 0.5 A cm−2 and 85 °C of only 1.51 V, equating to 98% energy efficiency, with an energy consumption of 40.4 kWh/kg hydrogen (vs. ~47.5 kWh/kg in commercial electrolysis cells). High energy efficiency, combined with the promise of a simplified balance-of-plant, brings cost-competitive renewable hydrogen closer to reality.
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Cited by
Shih, A. J., Monteiro, M. C. O., Dattila, F., Pavesi, D., Philips, M., da Silva, A. H. M., Vos, R. E., Ojha, K., Park, S., van der Heijden, O., et al. (2022) · Nature Reviews Methods Primers · doi:10.1038/s43586-022-00164-0 · Cited by 521
Precious Metal Free Hydrogen Evolution Catalyst Design and Application
Feidenhans’l, A. A., Regmi, Y. N., Wei, C., Xia, D., Kibsgaard, J., & King, L. A. (2024) · Chemical Reviews · doi:10.1021/acs.chemrev.3c00712 · Cited by 499
Emerging materials and technologies for electrocatalytic seawater splitting
Jin, H., Xu, J., Liu, H., Shen, H., Yu, H., Jaroniec, M., Zheng, Y., & Qiao, S.-Z. (2023) · Science Advances · doi:10.1126/sciadv.adi7755 · Cited by 417
Zhang, T., Jin, J., Chen, J., Fang, Y., Han, X., Chen, J., Li, Y., Wang, Y., Liu, J., & Wang, L. (2022) · Nature Communications · doi:10.1038/s41467-022-34619-5 · Cited by 296
Gas Evolution in Water Electrolysis
Kempler, P. A., Coridan, R. H., & Luo, L. (2024) · Chemical Reviews · doi:10.1021/acs.chemrev.4c00211 · Cited by 289
Metadata
- Authors
- Hodges, A., Hoang, A. L., Tsekouras, G., Wagner, K., Lee, C.-Y., Swiegers, G. F., & Wallace, G. G.
- Venue
- Nature Communications
- Published
- 2022-03-15
- Volume
- 13
- Issue
- 1
- Pages
- 1304-1304
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W4221035783
- Cited by
- 334
- References
- 0
- FWCI
- 12.10
- Type
- journal article
- Language
- en
- Open access
- gold
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- Hodges, A., Hoang, A. L., Tsekouras, G., Wagner, K., Lee, C.-Y., Swiegers, G. F., & Wallace, G. G. (2022). A high-performance capillary-fed electrolysis cell promises more cost-competitive renewable hydrogen. Nature Communications. https://doi.org/10.1038/s41467-022-28953-x
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